Prevent insecure plugin names.
Prevent insecure plugin names.

Plugins' names which contain '../', '$HOME', '%:h:h', '..\', etc.
can be dangerous.
Use a sensible whitelist for plugin names and prevent its expansion.

omalsa04/dotfiles,stephaneliu/dotfiles,ppslinux/Vundle.vim,ppslinux/Vundle.vim,ppslinux/Vundle.vim,ppslinux/Vundle.vim,sensorario/Vundle.vim,stephaneliu/dotfiles,ppslinux/Vundle.vim,omalsa04/dotfiles,ppslinux/Vundle.vim