Modified .gitignore (#51)
Modified .gitignore (#51)

* Now ignore the backup files ending by '~' in emacs or vim
brusselopole/Worldopole,brusselopole/Worldopole,PoUpA/Worldopole,brusselopole/Worldopole,PoUpA/Worldopole,PoUpA/Worldopole,PoUpA/Worldopole,brusselopole/Worldopole