Updated Maven references in README
Updated Maven references in README

layerhq/RestExpress,cailin186/RestExpress,RestExpress/RestExpress,geronimo-iia/restexpress,RestExpress/RestExpress,jyx140521/RestExpress,jyx140521/RestExpress,cailin186/RestExpress,jasonchaffee/RestExpress,layerhq/RestExpress,jasonchaffee/RestExpress