fix build (#5)

Author: RobTillaart

examples/functionGeneratorPlotter/functionGeneratorPlotter.ino

@@ -5,7 +5,7 @@
 //    DATE: 2020-06-10
 //     URL: https://github.com/RobTillaart/FunctionGenerator
 //
-// use a Serial plotter to show the data
+//  use a Serial plotter to show the data
 
 
 #include "functionGenerator.h"
@@ -16,8 +16,8 @@ funcgen gen;
 void setup()
 {
   Serial.begin(115200);
-  // Serial.print("Start functionGeneratorPerformance - LIB VERSION: ");
-  // Serial.println(FUNCTIONGENERATOR_LIB_VERSION);
+  //  Serial.print("Start functionGeneratorPerformance - LIB VERSION: ");
+  //  Serial.println(FUNCTIONGENERATOR_LIB_VERSION);
 
   gen.setAmplitude(50);
   gen.setFrequency(1);
@@ -28,24 +28,24 @@ void loop()
 {
   float t = millis() * 0.001;
 
-  // UNCOMMENT WAVES YOU WANT TO SEE
-  // DO NOT FORGET THE '\t' SEPARATOR PRINT
+  //  UNCOMMENT WAVES YOU WANT TO SEE
+  //  DO NOT FORGET THE '\t' SEPARATOR PRINT
 
 //  Serial.print(t, 3);
 //  Serial.print("\t");
 //  Serial.print(gen.square(t));
 //  Serial.print("\t");
-//  Serial.print(gen.sawtooth(t, 0));  // up  /|
+//  Serial.print(gen.sawtooth(t, 0));  //  up    /|   signal
 //  Serial.print("\t");
-//  Serial.print(gen.sawtooth(t, 1));  // down |\
+//  Serial.print(gen.sawtooth(t, 1));  //  down  |\   signal
 //  Serial.print("\t");
 //  Serial.print(gen.triangle(t));
 //  Serial.print("\t");
 //  Serial.print(gen.sinus(t));
 //  Serial.print("\t");
-    Serial.print(gen.stair(t, 16, 0));  // step up
+    Serial.print(gen.stair(t, 16, 0));  //  step up
     Serial.print("\t");
-    Serial.print(gen.stair(t, 16, 1));  // step down
+    Serial.print(gen.stair(t, 16, 1));  //  step down
     Serial.print("\t");
 //  Serial.print(gen.random());
 //  Serial.print("\t");