Add build instructions

Open-webOS-DCO-1.0-Signed-off-by: Eric Blade <eric.blade@palm.com>

Change-Id: I3729eb36b89dfd87f950a4f9e6a9d568ccf6723a
Just Type: Layout changes for UI Scaling

* Remove excess padding from category radio buttons
* Convert large elements' px sizing to % sizing
* Disable MainView horizontal scrolling

Open-webOS-DCO-1.0-Signed-off-by: Josh Palmer <jpalmerwatkins@me.com>
Just Type: Sizing changes for text input

* Now calculated on create to be 95% of the screen's shorter axis
  (Fits consistently with the luna-sysmgr Just Type bar)

Open-webOS-DCO-1.0-Signed-off-by: Josh Palmer <jpalmerwatkins@me.com>