Finish command parser program with callback function for passing command.
Add command parser with callback function and serial driver into net_server.
Add capablities and format query interface of v4l2 capturing program.
Add HAS_SERIAL macro to let net_server can do test in pc environment.
Update project description file.
Rename stm32 project.
Add README file into project.
Merge branch 'master' of http://github.com/joeshang/joycar