Added instructions for Vim's built in package manager

README.markdown

@@ -93,10 +93,42 @@ tutorials available._
 [nbn]: https://github.com/Shougo/neobundle.vim
 [pth]: https://github.com/tpope/vim-pathogen
 
-#### Vundle
+#### Vim's own package manager
 
-Add to your `.vimrc` and save:
+If you haven't used Vim's built in package manager yet you need to
+create the directory in which to install packages.
+
+```bash
+mkdir -p ~/.vim/pack/plugins/start
+```
+
+You can then clone this repo to that directory with
+
+```bash
+git clone git@github.com:reedes/vim-pencil.git ~/.vim/pack/plugins/start
+```
 
+To make this easier add the following to your .bashrc
+
+```bash
+#Vim plugins
+export VIMPLUGINS=~/.vim/pack/plugins/start 
+viminstallplugin() {
+    pushd $VIMPLUGINS
+    git clone $*  
+    popd
+}
+```
+
+Run source ~/.bashrc and then you will have an environment variable and a
+bash function defined. You may now install plugins by simply running
+viminstallplugin <git repo> eg:
+
+```bash
+viminstallplugin https://github.com/reedes/vim-pencil 
+```
+
+#### Vundle
 ```vim
 Plugin 'reedes/vim-pencil'
 ```