Adds es6 support for rest parameters in function signatures
Fixes issue with spec where rest parameter should be last
string: spell-check string literals
Merge pull request #162 from davidchambers/spell-checking

string: spell-check string literals
Add basic support for ECMAScript 6 Template Strings

Spec: http://tc39wiki.calculist.org/es6/template-strings/
Merge branch 'pr/163' into develop
Merge pull request #145 from pangloss/feature/rest-args

Adds es6 support for rest parameters in function signatures
support CommonJS syntax highlighting