split js with vendor/application

avoid one huge js bundle and instead break it down
to application and vendor (3rd party) our app changes
a lot, vendor changes a lot less

app/assets/javascripts/jquery_include.js.erb

@@ -0,0 +1,7 @@
+<%
+if Rails.env.development?
+  require_asset ("development/jquery-2.0.3.js")
+else
+  require_asset ("production/jquery-2.0.3.min.js")
+end
+%>