Better naming convention for appraisals

Author: jtmalinowski

Appraisals

@@ -1,11 +1,11 @@
-appraise "rails31" do
+appraise "rails-3.1" do
   gem 'rails', '~> 3.1'
 end
 
-appraise "rails32" do
+appraise "rails-3.2" do
   gem 'rails', '~> 3.2'
 end
 
-appraise "rails4" do
+appraise "rails-4.0" do
   gem 'rails', '~> 4.0'
 end