vimrc: buffergator, yunocommit, fix ctrlp ignore

Signed-off-by: Thameera Senanayaka <thameera123@gmail.com>
zshrc: add virtualenvwrapper related stuff

Signed-off-by: Thameera Senanayaka <thameera123@gmail.com>
install scripts: clone zsh-autosuggestions

Signed-off-by: Thameera Senanayaka <thameera123@gmail.com>