Remove .rspec file so developers can manage their own
Test Ruby 2.0.0 and use progress formatter on Travis
Fix deprecations and run on Ruby 2.0.0
Use --format instead of --formatter
Fix README markdown and gemspec
Move development dependencies into gemspec
Use the correct branch on the badge
Merge pull request #143 from opscode/adamed-open-source

KNIFE-345: KNIFE-346: ReadMe and test deprecation cleanup contributions