Remove dependency on missing (not required) image files.
Add skeleton for doc system:

* The implementation for the function updateDocPane will eventually be 
  auto generated from Ruby.
Improve doc pane - using a QListWidget instead of buttons
Add Ruby script to help generate Qt app doc system from Ruby metadata
remove accidental double underscores
turn nicely formatted docstring into an ugly single line for new system
Start populating doc system - exciting times!
Add FX and Samples to Qt doc system
Extract out docsystem to separate module and start adding lang docs
pull in requirements
Add skeleton info for all API methods and add to Qt doc system
Fix bug in arg names within rrand_i
Add examples_path helper method
use symbol for synth name rather than string
remove rand function from API - falling back to default Ruby impl
Update examples to work with latest API
Further API tweaks - revert octave behaviour
Add examples to Qt doc system
Dock documentation pane at bottom of screen
Teach docsystem about summaries and examples.