0.0.6 - Plethora of goodness

• Read configuration from stricter.config.js only
• Rule files are required to end with .rule.js
• include and exclude accept a regex, an array of regexes or a function
• Pass file path relative to root folder to include and exclude tests
• File contents was renamed into source
• New log level off
• Default log level is warning
• ast is now a function that returns AST
• Error code returned equals number of errors
• Unit tests
• Readme update