Add choicesClasses parameter for multipleRadio and multipleCheckbox widgets, so now we can style the choice text
Add fieldsetClasses parameter to fields for using when rendering multipleCheckbox and multipleRadio, so we can style the fieldset.
Uses cssClasses.label parameter to put classes on the legend tag, so we can style it
Merge branch 'master' of https://github.com/caolan/forms

Conflicts:
	lib/render.js
Corrections for #119
labelClasses on README.md
Corrections and tests for labelClasses widget attribute and fieldsetClasses field attribute, both for multipleCheckboxes and multipleRadio
Merge pull request #119 from ivanquirino/master

Add attributes to give classes to choices label, legend and fieldset on multipleRadio and multipleCheckbox