README.md in head_music-0.11.9 vs README.md in head_music-0.13.2

- old
+ new

@@ -22,10 +22,10 @@
 
     $ gem install head_music
 
 ## Usage
 
-TODO: Write usage instructions here
+HeadMusic can be used as a foundation to build larger applications that notate, analyze, play, or generate music in the language of music theory.
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.