add border mixins and remove deprecated activeadmin methods

Author: Rob Florence

README.md

@@ -18,6 +18,11 @@ As soon as ActiveAdmin 1.x is released to rubygems, I'll release the gem with no
 
 Previous version with support for Rails 3 is maintained in branch [support/0.6.x](https://github.com/fabn/activeadmin-globalize/tree/support/0.6.x)
 
+## Require Assets
+
+- active_admin.js: `//= require active_admin/active_admin_globalize.js`
+- active_admin.scss: `@import "active_admin/active_admin_globalize.css";`
+
 ## Your model
 
 ```ruby
@@ -68,7 +73,7 @@ form do |f|
 end
 
 # You can also set locales to show in tabs
-# For example we want to show English translation fields without tab, and want to show other languages within tabs 
+# For example we want to show English translation fields without tab, and want to show other languages within tabs
 form do |f|
   # ...
   f.inputs do

app/assets/stylesheets/active_admin/active_admin_globalize.sass

@@ -2,6 +2,34 @@
 
 @import "active_admin_globalize_flags"
 
+@mixin border-top-radius($radius)
+  -webkit-border-top-right-radius: $radius
+  border-top-right-radius: $radius
+  -webkit-border-top-left-radius: $radius
+  border-top-left-radius: $radius
+  background-clip: padding-box
+
+@mixin border-right-radius($radius)
+  -webkit-border-bottom-right-radius: $radius
+  border-bottom-right-radius: $radius
+  -webkit-border-top-right-radius: $radius
+  border-top-right-radius: $radius
+  background-clip: padding-box
+
+@mixin border-bottom-radius($radius)
+  -webkit-border-bottom-right-radius: $radius
+  border-bottom-right-radius: $radius
+  -webkit-border-bottom-left-radius: $radius
+  border-bottom-left-radius: $radius
+  background-clip: padding-box
+
+@mixin border-left-radius($radius)
+  -webkit-border-bottom-left-radius: $radius
+  border-bottom-left-radius: $radius
+  -webkit-border-top-left-radius: $radius
+  border-top-left-radius: $radius
+  background-clip: padding-box
+
 .active_admin
   .activeadmin-translations
     margin-bottom: 20px

lib/active_admin/globalize/engine.rb

@@ -7,13 +7,6 @@ class Engine < ::Rails::Engine
           "active_admin/active_admin_globalize.js"
         ]
       end
-
-      initializer "add assets" do
-        ActiveAdmin.application.register_stylesheet "active_admin/active_admin_globalize.css", :media => :screen
-        ActiveAdmin.application.register_javascript "active_admin/active_admin_globalize.js"
-      end
-
     end
   end
 end
-