allow dash as github username
allow dash as github username

TLmaK0/my_vim_config,ppslinux/Vundle.vim,akiniwa/dotfiles,kotamat/vundle,akiniwa/dotfiles,omalsa04/dotfiles,kotamat/vundle,ppslinux/Vundle.vim,ppslinux/Vundle.vim,akiniwa/dotfiles,sensorario/Vundle.vim,kotamat/vundle,kotamat/vundle,akiniwa/dotfiles,kotamat/vundle,ppslinux/Vundle.vim,stephaneliu/dotfiles,ppslinux/Vundle.vim,akiniwa/dotfiles,ppslinux/Vundle.vim,akiniwa/dotfiles,stephaneliu/dotfiles,omalsa04/dotfiles