DOC: Updated matplotlib examples with vector plots.

Also updated whatsnew with reference to these enhancements.
Moved to gallery
Merge pull request #376 from cpelley/whatsnew_10

DOC: Updated what's new.
Final tweaks for a release.
Review actions.
Updated examples for PEP8 conformality.
Merge pull request #379 from pelson/release_prep

Final doc tweaks for a release.
Updated dependency to matplotlib v1.3.0, and added a diff tool to make a html diff viewer for travis.
Merge pull request #377 from pelson/mpl_1.3

Updated dependency to matplotlib v1.3.1
Merge pull request #378 from bblay/tfw_up

Adds upper case world file support.
Updated the titles of the examples.
Updated the use of dataLim to avoid triggering a matplotlib (unsolved)
bug.
Merge pull request #380 from pelson/dataLim_accuracy

Alternative dataLim handling for defaulting to global.
Merge pull request #381 from pelson/example_titles

Updated the titles of the examples.
Bump version to 0.11.x
BLD: Travis scipy/numpy update

Use scipy from an unofficial ppa so that we can use v0.12.0 rather than
what's available in ubuntu 12.04 (v0.9.0).  Another ppa gives numpy
v1.7.0b2.
Merge pull request #382 from cpelley/travis_scipy

BLD: Travis scipy update
Fixed failing image tile test.
ian's stuff
wip