adjust pom.xml to gwt 2.5 dependency
adjust pom.xml to gwt 2.5 dependency

longtaoge/playn,playn/playn,playn/playn,rachelharvey/playn,ruslansennov/playn2,playn/playn,thecocce/playn-1,longtaoge/playn,tinkerstudent/playn,thecocce/playn-1,ruslansennov/playn2,rachelharvey/playn,tinkerstudent/playn