Tutorial: specify additional info
Tutorial: specify additional info

This patch adds the following information to the tutorial:
 - How to specify interface/port in lisa-ipython
 - The path of the board description json files
 - How to run specific rt-app json files

ARM-software/lisa,bjackman/lisa,credp/lisa,ARM-software/lisa,arnoldlu/lisa,bjackman/lisa,credp/lisa,credp/lisa,arnoldlu/lisa,credp/lisa,ARM-software/lisa,ARM-software/lisa