(Funny) Audio spectrum by colors

I added instructions to build the hardware, while the complete source code and installing software instructions are on github  https://github.com/guido57/Funny-Spectrum

I added a picture to show the mapping between audio frequencies and LED color.

I added real time FFT i.e. now all the audio samples contribute to the colors at the same speed (22.050 Hz - stereo)  of the music.

I added also music and light start and stop time in the web page (TODO change the config web page picture)