Add lhttpc to apps list in app.src file and add some documentation

README.md

@@ -0,0 +1,33 @@
+# esendgrid
+An Erlang library for sending e-mails via SendGrid [Web API v2]
+(https://sendgrid.com/docs/API_Reference/Web_API/mail.html)
+
+Installing
+----------
+
+In rebar.config:
+
+```Erlang
+{esendgrid, ".*", {git, "https://github.com/kato-im/sendgrid-erlang.git", {tag, "master"}}}
+```
+
+In sys.config:
+
+```Erlang
+{esendgrid, [
+  {sendgrid_api_user, <<"your-api-user">>},
+  {sendgrid_api_key,  <<"your-api-key">>}
+]}
+```
+
+Usage
+-----
+
+```Erlang
+esendgrid:send_email([ {<<"to">>, <<"to@domain.com">>}
+                     , {<<"from">>, <<"from@domain.com">>}
+                     , {<<"subject">>, <<"Subject message">>}
+                     , {<<"text">>, <<"Your body message here">>}
+                     , {<<"html">>, <<"Or you could also add some html here instead of text">>}
+                     ]).
+```

src/esendgrid.app.src

@@ -5,7 +5,8 @@
   {registered, []},
   {applications, [
                   kernel,
-                  stdlib
+                  stdlib,
+                  lhttpc
                  ]},
   {mod, { esendgrid_app, []}},
   {env, []}