Make Rails 4 Compatible
Use ActionView to render templates of any type

* Removed restriction to erb templates
* Fixed sillyness with overwriting options
remove attr_accessible from GoogleAccounts for rails 4 and modify initializer to allow specifying name of glass application/version for the googleapi client
add optional use of ENV variables to set api keys | use initializer for overriding default behavior
update readme
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/glass/api_keys.rb
	lib/glass/client.rb
	lib/glass/timeline_item.rb