1. show cli results as hash (critic.problems) 2. new formatter: yaml
update readme
Merge pull request #131 from leandronsp/result_hash_problems

Cli results as a hash and added YAML formatter
Updaed with YAML formatter info
Added quotes around file name for shell command.  Closes gh-130.
Updated for gh-130.
AllowInvalidRubyRuler now uses Gem.ruby to use the ruby that tailor was run with.

Closes gh-119
Test against ruby 2.0.0
Remove 2.0.0 testing; not ready to fix bugs for it yet
Updated the bundle