Add clone-vim-plugins.sh

clones plugins to ~/.vim/bundle dir

the problem is, we'll be overwriting this file while running
install-aliases.sh

so in future, this should clone into myutils/dotfiles/.vim/bundle
dir

also maybe we'll need to handle errors with .git directory while
running install-aliases.sh
add python.snippets
add dotfiles/.vim/bundle/* to gitignore

some more cleanup still to be done