Vundle is a tool for adding functionality to VIM. It allows you to add and update plug-ins for VIM.

Going to the github for bundle and follow the instructions in Quick Start in the README.md. I found it worked without errors for me, except that :h vundle did nothing.

Adding :PluginInstall syntastic worked to install syntastic, also see here. You can then check on what things are installed using :PluginList.

Pretty pleased with how easy it was!