Updated README file.
controller:lib: Added detailed log message for when commands timeout.
Corrected log and notification functions names. Updated AEM and ACMP
status names displayed in strings.
controller:lib: Updated code to send READ_DESCRIPTOR commands for
STREAM_PORT_INPUT and STREAM_PORT_OUTPUT descriptor last.
controller:app: Updated command line application set log level function.
Merge pull request #48 from denniszhuo/master

Updated AVDECC Controller lib and command line application