Add highlighter screenshot to docs
Merge branch 'develop' of https://github.com/idrc/tecla-framework into develop
Merge pull request #84 from jorgesilva/develop

Catching up to develop branch
Revert "Merge pull request #83 from ericwan78/issue-70"

This reverts commit 96c4fe4f1bcc78d01b8f3cea9712d5efac6d0deb, reversing
changes made to 284247324c6681d0253a856e0d4e655896673ce3.
Added Soft Keyboard Sample project under ime-scan folder.
Merge pull request #86 from jorgesilva/develop

Revert "Merge pull request #83 from ericwan78/issue-70"
Add preferences screen to a11y service.
Corrected a resource path.
Created classes for IME scanning.
Added key icon graphics resource file.
Added TeclaIME  to follow the inheritance of IME in tecla-framework.
Added method to gain access to an instance of TeclaIME.
Implemented IMEAdapter methods.
Create the basic structure of switches.
Created a single-switch touch interface.
Added click and long-click listener in single-switch interface.
Plugged single-switch interface into TeclaIME (interface only shows when keyboard shows).
Moved keyboard init to setKeyboardView method in IMEAdapter.
Plugged IMEAdapter into SoftKeyboard.
Unplug IMEAdapter before hiding keyboard.