Merge pull request #33 from denniszhuo/master

Updated lib and command line applcation.
Merge pull request #34 from denniszhuo/master

Updated lib
controller:lib: Added const to get_descriptor_type() functions. Updated
code to display stream format for unknown stream formats.
controller:app: Changed naming for list into view. Implemented
command to view media_clock.
controller:lib: Changed AStyle format indentation into 8 spaces.