Added a destroy method.

Destroy method keeps tracks of all unfired timeouts and clears them. It
also clears any words in the word cloud and their attached event
listeners. Finally it removes the jqcloud class.
Added the capability to update dinamically the cloud, as well as an example
Clear the async timeout on override cloud.
ready for bower
Merge branch 'master' of github.com:saravanan4514/jQCloud

Conflicts:
	jqcloud/jqcloud-1.0.4.js
typo in doc
Merge branch 'master' of github.com:acjzz/jQCloud

Conflicts:
	README.md
	jqcloud/jqcloud-1.0.4.js
	jqcloud/jqcloud-1.0.4.min.js
	src/jqcloud/jqcloud.js.erb
Merge branch 'master' of github.com:pokop/jQCloud

Conflicts:
	jqcloud/jqcloud-1.0.4.js
	src/jqcloud/jqcloud.js.erb
Merge branch 'master' of github.com:coron3r/jQCloud
Migrate to NodeJS/Grunt