fixed tests which causes trouble on travis
do not ignore tests anymore with fails_on_travis as their mark
use py.test with the -s flag;
Merge branch 'master' of https://github.com/sunpy/sunpy into dbtest-travis
Merge branch 'master' of https://github.com/sunpy/sunpy into dbtest-travis
added more tests
Merge branch 'master' of https://github.com/sunpy/sunpy into dbtest-travis
simplified test for the database package
Added tests for sun library
Added tests for sun library
added Nobeyama Radioheliograph as a lightcurve source
more edits to new NoRH Lightcurve class
bug fix for norh source.
implementing support for NoRH tcx data.
bug fixes for NoRH lightcurves
added a peek() function to NoRH lightcurves.
Implemented derdon's request for NotImplementedError.
Used a frozenset to store VSO attributes currently supported.
Fixed indentation; some weird issue with gedit
Fixed indentation again; used vim instead
Made changes according to derdon's suggestions.

1. Changed name of frozenset to SUPPORTED_SIMPLE_VSO_ATTRS.
2. Put the raise block in proper position.
3. Changed the error message.
4. Removed test.sqlite.