Fix for issue 56

Examples/FFT_01/FFT_01.ino

@@ -53,6 +53,7 @@ double vImag[samples];
 void setup()
 {
   Serial.begin(115200);
+  while(!Serial);
   Serial.println("Ready");
 }
 

Examples/FFT_02/FFT_02.ino

@@ -53,6 +53,7 @@ unsigned long time;
 void setup()
 {
   Serial.begin(115200);
+  while(!Serial);
   Serial.println("Ready");
   exponent = FFT.Exponent(samples);
 }

Examples/FFT_03/FFT_03.ino

@@ -47,6 +47,7 @@ void setup()
 {
   sampling_period_us = round(1000000*(1.0/samplingFrequency));
   Serial.begin(115200);
+  while(!Serial);
   Serial.println("Ready");
 }
 

Examples/FFT_04/FFT_04.ino

@@ -54,6 +54,8 @@ double vImag[samples];
 void setup()
 {
   Serial.begin(115200);
+  while(!Serial);
+  Serial.println("Ready");
 }
 
 void loop()

Examples/FFT_05/FFT_05.ino

@@ -54,6 +54,7 @@ double vImag[samples];
 void setup()
 {
   Serial.begin(115200);
+  while(!Serial);
   Serial.println("Ready");
 }