Pattern "test-4x3" is missing.

[David Glaude]

The provided keys.lua, there is a reference to the pattern "test-4x3" but there is not file "test-4x3.png" in the repository:

function handle_key_00 (pressed)
keybow.set_key("0", pressed)
keybow.load_pattern("test-4x3")
end

[Sandy Macdonald]

See #6.