Make 'rake' command run tests using Appraisal

README.md

@@ -494,7 +494,7 @@ their locale files. Take a look at how to use it running:
 rails generate enumerate_it:enum --help
 ```
 
-## Supported Ruby and Rails (ActiveSupport) versions
+## Supported Ruby and Rails versions
 
 Check [travis config file](https://github.com/lucascaton/enumerate_it/blob/master/.travis.yml).
 
@@ -516,7 +516,7 @@ codes. I had both situations in my legacy database.
 *   Make your feature addition or bug fix.
 *   Add tests for it. This is important so I don't break it in a future
     version unintentionally.
-*   Run the tests agaist all supported versions: `$ appraisal rake`.
+*   Run the tests agaist all supported versions: `$ rake`.
 *   Commit, do not mess with Rakefile, version, or history. (if you want to
     have your own version, that is fine but bump version in a commit by itself
     I can ignore when I pull)

Rakefile

@@ -1,12 +1,14 @@
 # encoding: utf-8
 
-require 'bundler'
+require 'rspec/core/rake_task'
+require 'appraisal'
+
 Bundler::GemHelper.install_tasks
 
-require 'rspec/core'
-require 'rspec/core/rake_task'
-RSpec::Core::RakeTask.new(:spec) do |spec|
-  spec.pattern = FileList['spec/**/*_spec.rb']
-end
+RSpec::Core::RakeTask.new(:spec)
 
-task default: :spec
+if ENV['APPRAISAL_INITIALIZED'] || ENV['TRAVIS']
+  task default: :spec
+else
+  task default: :appraisal
+end