I'll assume you are on Linux or Mac OSX. For Windows, replace ~/.vim/ with $HOME/vimfiles/.

If they don't exist already, create these two directories:

~/.vim/autoload/
~/.vim/bundle/

Save https://raw.githubusercontent.com/tpope/vim-pathogen/master/autoload/pathogen.vim to

~/.vim/autoload/pathogen.vim

Put these lines at the top of your vimrc:

execute pathogen#infect()
execute pathogen#helptags()
syntax on
filetype plugin indent on

Unzip delimitMate-master.zip in ~/.vim/bundle/, you should get:

~/.vim/bundle/delimitMate-master/autoload/...
~/.vim/bundle/delimitMate-master/doc/...
~/.vim/bundle/delimitMate-master/plugin/...
~/.vim/bundle/delimitMate-master/...

$ cd ~/.vim/bundle
$ git clone git@github.com:Raimondi/delimitMate.git

Same as installation process.

$ cd ~/.vim/bundle/delimitMate
$ git pull

Simply remove its directory from ~/.vim/bundle.