make example compile both on the desktop and in arduino

Author: pschatzmann

examples-desktop/generator/README.md

@@ -1,7 +1,12 @@
-# Desktop Implementation
+# Playing Sound on your Desktop
 
 We provide some generic output which will also work on Linux, Windows and OS/X
-The provided cmake is downloading all dependencies and builds an executable from the sketch
+The cmake is downloading all dependencies and builds an executable from the sketch.
+
+You just need to provide an Arduino Sketch as cpp file. In our example we use an example setup that can be compiled both in Arduin and with cmake: 
+
+- the sketch is provided as ino file
+- the cpp file is including the Arduino.h and the ino file
 
 To build the example execute
 
@@ -10,4 +15,5 @@ mkdir build
 cd build
 cmake ..
 make
-```
+```
+

examples-desktop/generator/generator.ino

@@ -15,7 +15,7 @@ void setup(void) {
   AudioLogger::instance().begin(Serial, AudioLogger::Info);
 
   // open output
-  PortAudioConfig config = out.defaultConfig();
+  auto config = out.defaultConfig();
   config.sample_rate = sample_rate;
   config.channels = channels;
   config.bits_per_sample = sizeof(int16_t)*8;