Remove unused and empty directory
Add an appropriate .gitignore
Add Travis CI configuration
plugins should not be in source control, so add it to .gitignore
plugin.xml should not be in source control as it is autogenerated
Fix broken build; previously, this plugin was to be a child of wro4j-parent, now it is an independent project that depends on wro4j.
Set the metadata appropriately in pom.xml
Move the plugin from ro.isdc.wro4j.grails-wro4j to org.grails.plugins.wro4j (which will allow the plugin to be published to the Grails plugin central)