README: fixed the urls to be a little less broken when viewed from github.com/jquery/plugins.jquery.com/
README: fixed the urls to be a little less broken when viewed from github.com/jquery/plugins.jquery.com/

markdalgleish/plugins.jquery.com,yaph/plugins.jquery.com,pepellou/plugins.jquery.com,ravasthi/plugins.jquery.com,wwalser/plugins.jquery.com