Added an ignore rule for the session directory.
Added an ignore rule for the session directory.

This is where vim-startify stores its session files.

FrankCardillo/dotfiles,elleryatgmail/dotfiles,dk0104/dotfiles,Wolfy87/dotfiles,Olical/dotfiles,dk0104/dotfiles,Wolfy87/dotfiles,FrankCardillo/dotfiles,elleryatgmail/dotfiles