Plot tick labels in display coordinates rather than data coordinates
Differentiate between data and pixel coordinates when plotting ticks and tick labels
Re-factored how frame and spines are handled
Attach frame to CoordinatesMap
Fix grid line clipping
Removed unused code
Fixes in angle formatter/locator
Adjustment to tick label position
Parameterize tests
Added tests for scalar formatter/locator and fix bug
Added .travis.yml
Added numpy version number to .travis.yml
Fix syntax
Added Astropy to .travis.yml
Don't use wheels
Don't hard-code version numbers
Fix tests for Python 3.3
Fix wrapping issue with tick angle interpolation
Added initial documentation
Updated .gitignore