Implemented and tested NestedForLoopRule
Improved codenarc.groovy to remove Rule suffix from rule name.
Fix special characters accidentally replaced with "?"
Merge remote-tracking branch 'origin/master'
Merge pull request #74 from MaciejZiarko/rule_suffix_removal

Improved codenarc.groovy to remove Rule suffix from rule name.
Moved NestedForLoop from basic to design ruleset
Merge pull request #73 from MaciejZiarko/NestedForLoopRule

New rule: NestedForLoopRule
Updates for latest contributions (#73 and #74)