Adding tests for wp.rst
Test cleaned up and improved
Minor fixes in tests
Merge pull request #30 from Dapid/master

Adding test for wp.rst
TST: convert wavelet.rst regression doctests to proper unit tests.
TST: add runtests.py file, make Travis CI work (didn't know knownfailure).
MAINT: write version info correctly, including git commit.
MAINT: add Eclipse files to .gitignore
TST: translate regression doctest wp2d.rst to proper unit tests.
Merge branch 'regression-wp2d' into master.

See https://github.com/rgommers/pywt/pull/33
MAINT: make Travis CI run also on Python 2.6 (no argparse in stdlib).
TST: mark bytes/str issue with Wavelet string properties as knownfail in py3.
TST: fix error in test_multilevel.py.  This works with 0.2.2
BUG: fix Wavelet.wavefun() issue.

Introduced in 177a031981.
BUG: accept None input in idwt.  Closes gh-29 and gh-32.