Changed 'parenthesis' setting to 'attribute_style' setting to allow for choice between 'hash' and 'html'
Updated output to correctly display html-style attributes or hash-style attributes. 'attribute_style' setting defaults to hash but can be updated by the user to use html style attributes
Merge pull request #217 from conraddecker/master

Changed 'parenthesis' setting to 'attribute_style' setting