Add changes for upcoming version

Fix travis (blue-yonder#126)

* refactored baseline comparison

* remove dirty part of version tag

added changes for version 0.3.1

Update CHANGES.rst

Parallel p values (blue-yonder#76)

* Refactored the p-calculation out for easier parallelization

* Add a settings variable to steer the number of processes used for calculating the p-value significance

* Parallelize the pvalue calculation.

For this, the _calculate_p_values function needs to return a pd.Series and the
df_feature DataFrame must be updated with the content of these Series.

* Increased the coverage again by explicitely calling the _calculate_p_value function

* Added an explicit test for const features

* Always use all cpus

* Tried to fix the bug of too many cores in multiprocessing on travis.ci builds.

updated README.rst for pypi

Resolve Issue blue-yonder#6

* blank spaces break sphinx parsing

* added author mail and pypi classifiers to setup.cfg

* used pandoc to create README.rst for pypi from README.MD

command was pandoc --from=markdown --to=rst README.MD -o README.rst

* use README.rst instead of README.MD as description on pypi

* fixed link to figure with exemplary time series features in pypi README.rst

* turn off the upload of the documentation to pypi

see devpi uploader command reference at
http://doc.devpi.net/latest/userman/devpi_commands.html

* added pypi_index.zip file containing a redirection to the read-the-docs documentation

upload it to pypi manually to redirect to rtd docs

* fixed doc hyperlink to my blog

Update README.md