BuffExplorer Implementation

BuffExplorer provides a complete Buffer list that is accessible (<Tab>)
and easy on the brain by providing a complete vertical list of buffers.

This way you don't have to remember the name of the file you're working
on (like with LustyJuggler). If you remember the name of the file, you
can use `/term<CR>` to open the first matching file.

I've modified the syntax file of the plugin to make it comply with the "it should look good" rule of YADR.

Hopefully BuffExplorer will proof superior to LustyJuggler and eventually replace it.