Started adding some tests
Changed image size, print out image id

Image id can be useful for figuring out why tests have failed
Added tests.TestFeatures
Define real_ftset and fake_ftset names as class properties
Added tests for pyslid.database.direct (python pickle contentDB)
Removed all references to PyslidException for now
typo, self.real_ftset not real_ftset
TestDatabaseDirect.py changed to work with the latest ContentDB format.

Note pyslid/database/direct.py still needs to be updated
Forgot to change one of the [] to {}
Added test for database.direct.updateDataset
Split most test methods into separate all and dataset methods
Tests updated to expect an 'info' field in ContentDB
Correct name of test method
Added missing parameters when calling createImage in createImageWithRes
Merge pull request #2 from manics/add_tests

Add integration tests