Adding wesanderson module with Wes Anderson color maps.
Add show_as_blocks method to display color maps in an IPython Notebook using ipythonblocks.
Fix color brewer URL bug, and add test that catches the same bug.

Conflicts:
	brewer2mpl/brewer2mpl.py

Thanks @mbforbes for this fix.
Make sys.version_info check Python 2.6 compatible.