move deprecated RMagick.rb file
only require rubocop on ruby versions >= 1.9.2
Merge pull request #151 from mockdeep/rubocop_version

Only require RuboCop on Ruby versions >= 1.9.2
Merge pull request #141 from mockdeep/deprecate

Deprecate requiring 'RMagick' and avoid filename case conflicts
set up simplecov

I had to change a bunch of `require`s to `require_relative` to resolve
pathing issues when running this. You can run the coverage with
`ruby test/test_all_basic.rb`, then open up `coverage/index.html`
Merge pull request #147 from mockdeep/simplecov

Add SimpleCov
Add utility module for checking minimum required versions
Simplify minimum required ImageMagick version checking