message: BasicGain_wApp: improve the description at the top
diff: * Purpose: Process audio using Tympan by applying gain.
  * Also, illustrate how to change Tympan setting via the TympanRemote App.
  *
  -* Blue potentiometer adjusts the digital gain applied to the audio signal.
  +* TympanRemote App: https://play.google.com/store/apps/details?id=com.creare.tympanRemote
  *
  -* Uses default sample rate of 44100 Hz with Block Size of 128
  +* As a tutorial on how to interact with the mobile phone App, this example should be your
  +* first step. In this example, we started with the example sketch "01-Basic\BasicGain" and
  +* added functionality to interact with the App.
  *
  -* TympanRemote App: https://play.google.com/store/apps/details?id=com.creare.tympanRemote&hl=en_US
  +* Because BasicGain was such a basic example (it only applied gain, which would change
  +* the overal loudness from the Tympan), this "BasicGain_wApp" is similarly basic. It
  +* shows you how to change the loudness of the Tympan from the App.
  +*
  +* 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
  +*
  +* The core of each of these three elements can be see in these functions:
  +* * Define the GUI: see "createTympanRemoteLayout()"
  +* * Transmit the GUI: see "printTympanRemoteLayout"
  +* * Respond to commands: see "respondsToByte()" and the functions it calls
  *
  * MIT License. use at your own risk.
  */
  