Provide gem binary

[kowal]

As an alternative to rake task it would be nice to have gem binary available:

bin/dev-check
# or
bundle exec dev-check

Why?

• command line interface could be much nicer than the one Rake provides, it's easy to build using https://github.com/davetron5000/gli or https://github.com/leejarvis/slop
• user won't have to setup any rake tasks
• user won't even have to setup config, everything could be placed in command line options in build script
• to provide basic options like --help, --verbose or even sub-command dev-check init which might be handy for new users or when setting up dev-tools in new project
• to allow users to override some of default settings, like --skip-tests or --only=style
• to allow users to load custom config --config=config/polishgeeks/strict.rb
• to allow users to use various formatters (json, html, ..)

I'm sure any one could provide his own ideas how to extend it. The things is first step is to provide real command line app framework instead of Rake.

I'm happy to provide some PR for start.

[agwozdowski]

👍