odeits

remove requirements on netcat

1

you can listen on socket directly with bash http://nerotux.tuxfamily.org/articles.php?article_id=72

assignment will fail if raw_input does not exist, allowing for the subsequent calls to be consistent.

Added missing comma for PLUS example

Error ``` 2016-03-30 19:40:23.967 zbar_opencv[28059:2814182] -[CaptureDelegate doFireTimer:]: unrecognized selector sent to instance 0x7ff022418550 2016-03-30 19:40:23.969 zbar_opencv[28059:2814182] An uncaught exception was raised 2016-03-30 19:40:23.969 zbar_opencv[28059:2814182] -[CaptureDelegate doFireTimer:]: unrecognized selector sent to...