message: TrebleBoost_wApp: improve description at top
diff: * As a tutorial on how to interact with the mobile phone App, you should first explote the previous
  * example, which was "BasicGain_wApp".
  *
  -* Here in "TrebleBoost_wApp", we started with the example sketch "01-Basic\BasicGain" and added
  -* the App functionality. It starts with the same features of "BasicGain_wApp" and adds new
  -* App-related features so that you can see a more complicated example.
  +* Here in "TrebleBoost_wApp", we started with the example sketch "01-Basic\TrebleBoost" and added
  +* the App functionality. The App functionality in "TrebleBoost_wApp" is the same as
  +* "BasicGain_wApp" but adds features so that you can see a more complicated example.
  *
  -* Like the previous example shows you:
  +* Like any App-enabled sketch, this example shows you:
  * * How to use Tympan code here to define a graphical interface (GUI) in the App
  * * How to transmit that GUI to the App
  * * How to respond to the commands coming back from the App
  *
  -* This example extends the previous example by:
  -* * Adding more buttons groups ("cards") to the previous example's GUI
  -* * Adding another page to the GUI
  -* * Adding a button that you can illuminate to indicate state
  +* Compared to the previous example, this sketch:
  +* * Adds more buttons groups ("cards") to the previous example's GUI
  +* * Adds another page to the GUI
  +* * Adds a button that you can illuminate to indicate state
  *
  * MIT License. use at your own risk.
  */
  