added make.bat file
Merge pull request #40 from anizami/add-make.bat

Added make.bat file
Make use of astropy affiliated package infrastructure
Don’t test Python 3.2
Enable coveralls
Merge pull request #42 from astrofrog/use-astropy-helpers

Make use of astropy affiliated package infrastructure
added tests for image comparison
Merge pull request #41 from anizami/new-image-tests

code for generating and comparing images
spacing has to be quantity for ScalarFormatterLocator
added format_unit to change units
oops forgot to remove a * self._format_unit
added set_format_unit method
AngleFormatterLocator now takes quantities, updated CoordinateHelper accordingly
specifying units works now
fixed some variables change errors
cleaned up some code
removed some more spaces
small change to locator method