docker: Add /notebooks/examples directory and put matplotlib's examples
docker: Add /notebooks/examples directory and put matplotlib's examples

mrkn/pycall,mrkn/pycall,mrkn/pycall.rb,mrkn/pycall.rb,mrkn/pycall.rb,mrkn/pycall,mrkn/pycall.rb,mrkn/pycall