Merge pull request #1 from openlilylib/smufl

smufl: Small update of README
add Bravura 0.7

Version 0.7 of the SMuFL font Bravura is added as the current snippet works
only with SMuFL 0.7 and Bravura 0.7. The licence is included.
ignore font zip files
Adapt smufl description
Merge pull request #22 from joram-berger/smufl

Smufl