Move bootstrap and font-awesome dependency to main file

lib/patternfly-sass.rb

@@ -74,6 +74,9 @@ def register_compass_extension
     end
 
     def register_rails_engine
+      require 'bootstrap-sass'
+      require 'font-awesome-sass'
+
       require 'patternfly-sass/engine'
     end
 
@@ -86,4 +89,4 @@ def register_sprockets
   end
 end
 
-Patternfly.load!
+Patternfly.load!

lib/patternfly-sass/engine.rb

@@ -1,6 +1,3 @@
-require 'bootstrap-sass'
-require 'font-awesome-sass'
-
 module Patternfly
   module Rails
     class Engine < ::Rails::Engine