Merge branch 'release/v0.5' into develop

Added error handling. Bumped gem versions.
Merge branch 'hotfix/v0.5.1' into develop

Temporarily removed newrelic
Refactored app into multiple parts
Added rvmrc and ruby-version & ruby-gemset
Updated gems
Readded newrelic
Added ruby version to Gemfile
Merge branch 'release/0.5.2'