ipynb_static backend
This backend allows us to draw a single png image onto IPython notebook.
- It imports `display_png` from `IPython.display`
- Takes a screenshot, converts it to PNG and encodes with base64
- Displays it with `display_png` on `canvas.show()`
Add examples
FIX: Fix tests
STY: Minor tweak
Merge pull request #385 from Eric89GXL/fix-tests

FIX: Make testing slightly cleaner
Made app.run() do nothing
WIP: mplexporter / pyplot interface
FIX: Py3k
FIX: Quieter nose
FIX: Cleaner example [ci skip]
WIP: Some text support [ci skip]
FIX: Fix text
ENH: Add Markers [ci skip]
FIX: Fix text size [ci skip]
FIX: Fix image
FIX: Fix size [ci skip]
FIX: Fix coords
ENH: Better example [ci skip]
FIX: Blocking [ci skip]
FIX: Fix after rebase [ci skip]