ENH: Allow more flexibility with geometries
Changeup tests to reflect drop=False default
Only define name 'geometry' in one place
Allow setting of crs in set_geometry
ENH: Add set_dataframe method to DataFrame
CLN: crs set order: passed in, passed Series, DataFrame.
Merge pull request #60 from jtratner/be-flexible-with-geometry-column

Allow arbitrary geo col name and add set_geometry method to DataFrame
BUG: Add io to the packages list
Merge pull request #61 from kjordahl/bug/setup_package_io

BUG: Add io to the packages list
Fix travis CI build

Use ubuntugis stable.
TST: Add check_crs flag to assert_geoseries_equal
Fix tests to include crs when comparing GeoSeries
Merge pull request #63 from jwass/travis-fix

Fix travis CI build
Merge pull request #64 from jwass/crstest

Crstest