Multiple attribute-surrounding expressions

customAttrOpen / customAttrClose replaced by customAttrSurround

customAttrSurround is an array of tuples.
Each tuple represents an open/close regexp pair.
Run `grunt`.
Merge pull request #204 from duncanbeevers/wrapped-attrs

Add support for multiple attribute-surrounding expressions
Don’t choke on valueless event attributes
Merge pull request #206 from duncanbeevers/valueless-event-attribute

Don’t choke on valueless event attributes
Implement maxLineLength option
More flexible cli args
Run `grunt`.