fix for https://github.com/makaroni4/sandi_meter/issues/38
Added CONTRIBUTING.md
Output details of fourth rule violations
Add additional assertion that instance variables are not duplicated

Add multiple assignments using the same instance variable to the test
controller method and then assert that the number of instance variables
added to the log for that method is the number of unique ones.

Clean up left over debugging require of pp
Added generation of config file with threshold percentage to generate exit 1 #40
Merge pull request #42 from drueck/fourth-rule-details

Output details of fourth rule violations
Upload html screenshots to CloudApp
Refactored config files generation
Merge PR by @yltsrc
Merge PR with threshold and CLI refactoring
Release new version with config file and threshold support, added Ruby 2.1 to Travis config
Run sandi_meter vs itself in Travis
Added percentage plots tab for rules and overall percentage #31
Merge pull request #45 from makaroni4/feature/percentage_charts

Added percentage plots tab for rules and overall percentage #31
Fix Y labels on percentage charts
Merge pull request #46 from mrcasals/feature/fix_y_axis_on_percentage

Fix Y axis on percentage charts
Update formatter.rb
Update README.md
Merge pull request #51 from punchh/master

Typos?
Add JsonFormatter and new option --json