Update v6.0
Merge branch 'master' of https://github.com/mastro-elfo/dollar

Conflicts:
	dollar.js
	dollar.min.js
	modules/dollar.ajax.js
	modules/dollar.base64.js
	modules/dollar.class.js
	modules/dollar.class.min.js
	modules/dollar.dom.js
	modules/dollar.dom.min.js
	modules/dollar.each.js
	modules/dollar.each.min.js
	modules/dollar.interval.js
	modules/dollar.interval.min.js
	modules/dollar.json.js
	modules/dollar.storage.js
	modules/dollar.timeout.js
	modules/dollar.timeout.min.js
	modules/dollar.typeof.js
	modules/dollar.utf8.js
	modules/dollar.xpath.js
Update v6.0