update copyright header
remove VST functions
add Makefile

For now this depends on larsl's `lv2-c++-tools`, which can be downloaded
from http://freecode.com/projects/lv2-c-tools . Revert to plain C later.
Convert pianoData array to raw audio file

To play back the raw audio file use:

  aplay -t raw -f S16_LE -r 44100 data/samples.raw

It should be possible to replace the samples with something of a little
higher quality later.
load samples from file