Merge pull request #27 from morganpackard/MP-Filtered_Noise_Synth

Filtered Noise demo.
Fixed implicitly private inheritance of BufferFiller - you can now declare Generator without scoping it to Tonic. Closes #25
Adding .gitattributes for project file union merge
Merge branch 'master' of github.com:morganpackard/Tonic
rebase/merge