diff --git a/evax.gemspec b/evax.gemspec
index b7b826d..a7dc849 100644
--- a/evax.gemspec
+++ b/evax.gemspec
@@ -29,4 +29,4 @@ Gem::Specification.new do |s|
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
-end
\ No newline at end of file
+end
diff --git a/lib/evax.rb b/lib/evax.rb
index e31e2b8..75aa622 100644
--- a/lib/evax.rb
+++ b/lib/evax.rb
@@ -4,11 +4,15 @@
 require_relative "evax/version"
 require_relative "evax/css_minifier"
 require_relative "evax/logger"
+require_relative "evax/railtie" if defined? Rails::Railtie
 
 class Evax
+  DEFAULT_CONFIG_FILE   = "config/assets.yml"
+  DEFAULT_RELATIVE_PATH = "public/assets"
+
   attr_reader :config_file, :relative_path
 
-  def initialize( config_file = "config/assets.yml", relative_path = "public/assets" )
+  def initialize( config_file = DEFAULT_CONFIG_FILE, relative_path = DEFAULT_RELATIVE_PATH )
     @config_file   = File.expand_path( config_file )
     @relative_path = File.expand_path( relative_path )
 
diff --git a/lib/evax/railtie.rb b/lib/evax/railtie.rb
new file mode 100644
index 0000000..26a916a
--- /dev/null
+++ b/lib/evax/railtie.rb
@@ -0,0 +1,9 @@
+require "rails/railtie"
+
+class Evax
+  class Railtie < Rails::Railtie
+    rake_tasks do
+      load "evax/tasks/evax.rake"
+    end
+  end
+end
diff --git a/lib/evax/tasks/evax.rake b/lib/evax/tasks/evax.rake
new file mode 100644
index 0000000..0d0518d
--- /dev/null
+++ b/lib/evax/tasks/evax.rake
@@ -0,0 +1,11 @@
+namespace :evax do
+
+  desc "Build assets with Evax"
+  task :build, :config_path, :output_path do |task, args|
+    config_file_path = args[:config_path] || Evax::DEFAULT_CONFIG_FILE
+    relative_path    = args[:output_path] || Evax::DEFAULT_RELATIVE_PATH
+
+    Evax.new(config_file_path, relative_path).build
+  end
+
+end