number multiple windown when switching

Change-Id: I112da5bd6f92dfe6baeb276ac6c4b0a683f9f9d7
make more use of vim, need to install vundle for it to work, git clone https://github.com/gmarik/vundle.git ~/.vim/bundle/vundle

Change-Id: I683e7e9f0bf20e408707b4153e42f04f78ecfd28