README.md file added.
Gemfile added.
base groups added to Gemfile

* development
* development, test
* test
simplecov gem added under test group
simplecov shared configuration file added
Merge branch 'feature/simplecov' into develop
minitest & minitest-reporters gems added under test group
minitest_helper added

with SpecReporter and  simplecov support
Rakefile with :test task
Merge branch 'feature/minitest' into develop
guard-minitest gem (with libnotify support) added to development group
Guardfile added with libnotify notification support
Guard initialization for minitest
Merge branch 'feature/guard' into develop
Merge pull request #1 from airy/develop

bootstrap code base with simplecov, minitest & guard