add build info to readme
add build info to readme

yxin05/2048-android,yxin05/2048-android,SidBala/2048-Android,pleymor/2048-android,yxin05/2048-android,kumarvmsathish/2048-android,nperiwal/2048-android,DeLaSalleUniversity-Manila/2048-JJCpro10,yxin05/2048-android,huhu/2048-android,treejames/2048-android,cgpllx/2048-android,payne/2048-android,uberspot/2048-android,FrameMen/blueblock-android