Update travis to use last rake

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
-gemfile:
-- test/support/Gemfile
+bundler_args: --without integration
 rvm:
-- 1.9.3
-script: bundle exec rake foodcritic
+  - 1.9.3
+  - 2.0.0
+script: bundle exec rake travis

Gemfile

@@ -1,5 +1,7 @@
 source 'https://rubygems.org'
 
+gem 'rake'
+
 group :test do
   gem 'foodcritic', '~> 3.0'
   gem 'rubocop', '~> 0.18'

test/support/Gemfile

@@ -1,4 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'rake'
-gem 'foodcritic'