added rake task to update wax lib from within a project
added rake task to update wax lib from within a project

hj3938/wax,taobao-idev/wax,a20251313/wax,LiJingBiao/wax,FlashHand/wax,1yvT0s/wax,RoyZeng/wax,BITA-app/wax,taobao-idev/wax,hj3938/wax,a20251313/wax,RoyZeng/wax,qskycolor/wax,chiyun1/wax,LiJingBiao/wax,probablycorey/wax,felipejfc/n-wax,RoyZeng/wax,qskycolor/wax,felipejfc/n-wax,hj3938/wax,dxd214/wax,BITA-app/wax,1yvT0s/wax,marinehero/wax,probablycorey/wax,BITA-app/wax,marinehero/wax,probablycorey/wax,dxd214/wax,chiyun1/wax,dxd214/wax,FlashHand/wax,FlashHand/wax,LiJingBiao/wax,chiyun1/wax,hj3938/wax,qskycolor/wax,FlashHand/wax,1yvT0s/wax,LiJingBiao/wax,a20251313/wax,marinehero/wax,taobao-idev/wax,probablycorey/wax,chiyun1/wax,dxd214/wax,felipejfc/n-wax,qskycolor/wax,a20251313/wax,felipejfc/n-wax,marinehero/wax,BITA-app/wax,RoyZeng/wax,taobao-idev/wax,1yvT0s/wax