renamed "software" directory into "vision"

 Changes to be committed:
	renamed:    software/Makefile -> vision/Makefile
	renamed:    software/main.cpp -> vision/main.cpp
	renamed:    software/test_opencv.cpp -> vision/test_opencv.cpp
	renamed:    software/testpics/091111_DiningTable.jpg -> vision/testpics/091111_DiningTable.jpg
	renamed:    software/testpics/table.jpg -> vision/testpics/table.jpg
deleted binary

 Changes to be committed:
	deleted:    vision/utquadcopter
Added a directory for drone controller code.

Changes to be committed:
      new file:   drone-control/test.js