Commented Switch Event code.
Refactored code in TeclaAccessibilityService.selectNode method.
Refactored some code.
Merge pull request #39 from jorgesilva/develop

Exported first draft assets. Fixes #38
Merge pull request #40 from jorgesilva/develop

Remove white background in some UI assets.
Select node in a thread.
Modified node selection thread algorithm.
Created classes for HUD.
Added resources for drawing HUD.
Added resources and code for drawing HUD.
Added missing resources in the docs folder.
Added missing resources in the highlighter project.
Merge pull request #42 from ericwan78/issue-36

Moved node selection algorithm to thread
Writing code for HUD ...
Writing HUD code.
Removed previous touch interface debugging code.
Setting up overlay  ...
Added right side button in the resources and added drawable resources in the lists of TeclaHUD class.
Completed the implementation of HUD.
Implemented full-screen single-switch scanning for navigation.