== Added oscvplayground, .gitignore, todo.md, and comments to some existing files. ==

Folder oscvplayground:
- ocvmin.py: Minimal example for streaming video using OpenCV
- scvmin.py: Minimal example for streaming video using SimpleCV
- oscvmin.py:
    - Minimal example for grabbing with OpenCV and processing/visualizing with SimpleCV
    - This was needed, because I did not yet figure out how to grab TCP (H264) stream using SimpleCV
- oscvpoc.py:
    - Proof of concept for one of the CV modules that Sander will need:
    - perception for navigation; centering the drone horizontally above two coloured dots
- ocvrec.py: 
    - Version of ocvmin.py that also records the stream _with any image processing/visualization on top_
    - This example doesn't work properly yet

File .gitignore tells git to not watch .pyc files, log files and .idea folder.

File todo.md is still empty. Initial contents will be added with next commit.

Added some unimportant comments tp ardrone2.py, launcher.py, and guide/lessons<x>.py.