Update README.md
Update README.md
Update README.md
Add LICENSE file via addalicense.com
Rname directories to integrate filenames to starts with ex-
Merge branch 'master' of https://github.com/wkentaro/pyexamples
Add vispy, opencv, skimage, pyqt examples
Delete exopencv
Merge branch 'master' of https://github.com/wkentaro/pyexamples