Adding Openlilylib snippets

[ET de Boone]

Hi everybody,

Let me first say I love lilypond!

I got into it thanks to LaTeX and musicTeX, wanting to write drumscores for 
pipebands. Luckily, quite some work was done already by Sven and a french guy. 
All I've been doing was a little bit of tweaking. My repo can be found at 
https://github.com/kastdeur/lilydrum

If somebody could give me some pointers for modifying/correcting the code to 
add it to openlilylib I would gladly submit it. 

Cheers,
Eric Teunis   de Boone