Revise installation instructions
Revise installation instructions

ws4py isn't packaged on Raspbian ... damn

arontsang/pistreaming,waveform80/pistreaming,BenGamma/kitcat-pi-server,BenGamma/kitcat-pi-server,BenGamma/kitcat-pi-server,waveform80/pistreaming,arontsang/pistreaming,arontsang/pistreaming,waveform80/pistreaming