Fixed pagination without 'fixtaglib' for grails 2.4

g:paginate was moved from RenderTaglib to UrlMappingTagLib in 2.4:
https://github.com/grails/grails-core/commit/7a031f2112918dc1ef4241c7b3d9ff9ce6ae85ca

fixes #117

Conflicts:
	README.md
	TwitterBootstrapGrailsPlugin.groovy