Updating internal operator logic to allow for rules usage
Updates to readme
Adding documentation and checking internal check logic
Now throws REQUIRED_ERROR from use_checks rather than an invalid error
Example, test and documentation additions
Added ability to use custom errors
Fixed missing definition of stop_if_error
Fixed errors and added missing_error
Merge branch 'develop_rules_integration' into develop
Added tests for custom missing errors
Allows providing of errors as strings
Working on docs
No longer permanently building unrecognized keys
Improved array check
Added jslint and acted upon suggestions
Fixed bug that would return all values as undefined
Added istanbul code coverage tester and achieved 100% coverage
Fixed use_check error reporting when used without a validator
Renamed .default to .default_value as "default" is a keyword
Travis config