Add before_action snippet

Author: robertomiranda

snippets/ruby.snippets

@@ -620,6 +620,8 @@ snippet asrj
 	assert_rjs :${1:replace}, "${0:dom id}"
 snippet ass assert_select(..)
 	assert_select '${1:path}', :${2:text} => '${3:inner_html' ${4:do}
+snippet ba
+	before_action :${0:method}
 snippet bf
 	before_filter :${0:method}
 snippet bt