update gems, ruby 2.1.1 support

tests/app_test.rb

@@ -7,8 +7,6 @@ def status;  last_response.status end
 def headers; last_response.headers end
 def body;    last_response.body end
 
-SimpleCov.command_name 'minitest'
-
 describe 'index' do
   it 'loads' do
     get '/'

tests/environment.rb

@@ -7,6 +7,8 @@ SimpleCov.start do
   add_filter "/migrations/"
 end
 
+SimpleCov.command_name 'minitest'
+
 require './environment'
 require 'webmock'
 include WebMock::API