diff --git a/src/angular-googleapi.js b/src/angular-googleapi.js
index 4852c2f..33524bf 100644
--- a/src/angular-googleapi.js
+++ b/src/angular-googleapi.js
@@ -1,113 +1,127 @@
-angular.module('googleApi', [])
-	.value('version', '0.1')
+(function(){
+  'use strict';
+  angular.module('googleApi', [])
+    .value('version', '0.1')
 
     .service("googleApiBuilder", function($q) {
-        this.loadClientCallbacks = [];
-
-        this.build = function(requestBuilder, responseTransformer) {
-            return function(args) {
-                var deferred = $q.defer();
-                var response;
-                request = requestBuilder(args);
-                request.execute(function(resp, raw) {
-                    if(resp.error) {
-                        deferred.reject(resp.error);
-                    } else {
-                        response = responseTransformer ? responseTransformer(resp) : resp;
-                        deferred.resolve(response);
-                    }
-
-                });
-                return deferred.promise;
-
+      this.loadClientCallbacks = [];
+
+      this.build = function(requestBuilder, responseTransformer) {
+        return function(args) {
+          var deferred = $q.defer();
+          var response;
+          var request = requestBuilder(args);
+          request.execute(function(resp, raw) {
+            if(resp.error) {
+              deferred.reject(resp.error);
+            } else {
+              response = responseTransformer ? responseTransformer(resp) : resp;
+              deferred.resolve(response);
             }
-        };
 
-        this.afterClientLoaded = function(callback) {
-            this.loadClientCallbacks.push(callback);
-        };
+          });
+          return deferred.promise;
 
-        this.runClientLoadedCallbacks = function() {
-            for(var i=0; i < this.loadClientCallbacks.length; i++) {
-                this.loadClientCallbacks[i]();
-            }
-        };
+        }
+      };
+
+      this.afterClientLoaded = function(callback) {
+        this.loadClientCallbacks.push(callback);
+      };
+
+      this.runClientLoadedCallbacks = function() {
+        for(var i=0; i < this.loadClientCallbacks.length; i++) {
+          this.loadClientCallbacks[i]();
+        }
+      };
     })
 
     .provider('googleLogin', function() {
 
-        this.configure = function(conf) {
-            this.config = conf;
-        };
-
-        this.$get = function ($q, googleApiBuilder, $rootScope) {
-            var config = this.config;
-            var deferred = $q.defer();
-            return {
-                login: function () {
-                    gapi.auth.authorize({ client_id: config.clientId, scope: config.scopes, immediate: false}, this.handleAuthResult);
-
-                    return deferred.promise;
-                },
-
-                handleClientLoad: function () {
-                    gapi.auth.init(function () { });
-                    window.setTimeout(checkAuth, 1);
-                },
-
-                checkAuth: function() {
-                    gapi.auth.authorize({ client_id: config.clientId, scope: config.scopes, immediate: true }, this.handleAuthResult );
-                },
-
-                handleAuthResult: function(authResult) {
-                    if (authResult && !authResult.error) {
-                        var data = {};
-                        $rootScope.$broadcast("google:authenticated", authResult);
-                        googleApiBuilder.runClientLoadedCallbacks();
-                        deferred.resolve(data);
-                    } else {
-                        deferred.reject(authResult.error);
-                    }
-                },
+      this.configure = function(conf) {
+        this.config = conf;
+      };
+
+      this.$get = function ($q, googleApiBuilder, $rootScope) {
+        var config = this.config;
+        var deferred = $q.defer();
+        return {
+          login: function () {
+            gapi.auth.authorize({ client_id: config.clientId, scope: config.scopes, immediate: false}, this.handleAuthResult);
+
+            return deferred.promise;
+          },
+
+          handleClientLoad: function () {
+            gapi.auth.init(function () { });
+            window.setTimeout(checkAuth, 1);
+          },
+
+          checkAuth: function() {
+            gapi.auth.authorize({ client_id: config.clientId, scope: config.scopes, immediate: true }, this.handleAuthResult );
+          },
+
+          handleAuthResult: function(authResult) {
+            if (authResult && !authResult.error) {
+              var data = {};
+              $rootScope.$broadcast("google:authenticated", authResult);
+              googleApiBuilder.runClientLoadedCallbacks();
+              deferred.resolve(data);
+            } else {
+              deferred.reject(authResult.error);
             }
-        };
+          },
+        }
+      };
 
 
     })
 
     .service("googleCalendar", function(googleApiBuilder, $rootScope) {
 
-        var self = this;
-        var itemExtractor = function(resp) { return resp.items; };
-
-        googleApiBuilder.afterClientLoaded(function() {
-            gapi.client.load('calendar', 'v3', function() {
+      var self = this;
+      var itemExtractor = function(resp) { return resp.items; };
 
-                self.listEvents = googleApiBuilder.build(gapi.client.calendar.events.list, itemExtractor);
-                self.listCalendars = googleApiBuilder.build(gapi.client.calendar.calendarList.list, itemExtractor);
-                self.createEvent = googleApiBuilder.build(gapi.client.calendar.events.insert);
+      googleApiBuilder.afterClientLoaded(function() {
+        gapi.client.load('calendar', 'v3', function() {
 
-                $rootScope.$broadcast("googleCalendar:loaded")
-            });
+          self.listEvents = googleApiBuilder.build(gapi.client.calendar.events.list, itemExtractor);
+          self.listCalendars = googleApiBuilder.build(gapi.client.calendar.calendarList.list, itemExtractor);
+          self.createEvent = googleApiBuilder.build(gapi.client.calendar.events.insert);
 
+          $rootScope.$broadcast("googleCalendar:loaded")
         });
 
+      });
+
     })
 
-		.service("googlePlus", function(googleApiBuilder, $rootScope) {
+    .service("googlePlus", function(googleApiBuilder, $rootScope) {
+
+      var self = this;
+      var itemExtractor = function(resp) { return resp.items; };
 
-				var self = this;
-				var itemExtractor = function(resp) { return resp.items; };
+      googleApiBuilder.afterClientLoaded(function() {
+	gapi.client.load('plus', 'v1', function() {
+	  self.getPeople = googleApiBuilder.build(gapi.client.plus.people.get);
+	  self.getCurrentUser = function() {
+	    return self.getPeople({userId: "me"});
+	  }
+	  $rootScope.$broadcast("googlePlus:loaded")
+	});
 
-				googleApiBuilder.afterClientLoaded(function() {
-						gapi.client.load('plus', 'v1', function() {
-							self.getPeople = googleApiBuilder.build(gapi.client.plus.people.get);
-							self.getCurrentUser = function() {
-								return self.getPeople({userId: "me"});
-							}
-							$rootScope.$broadcast("googlePlus:loaded")
-						});
+      });
 
-				});
+    })
+    .service("googleDrive", function(googleApiBuilder, $rootScope) {
+      var self = this;
+      var itemExtractor = function(resp) { return resp.items; };
+      googleApiBuilder.afterClientLoaded(function() {
+        gapi.client.load('drive', 'v2', function() {
+          self.listFiles = googleApiBuilder.build(gapi.client.drive.files.list);
+        });
+        $rootScope.$broadcast("googleDrive:loaded")
+      });
 
-		})
+    });
+})();
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