Merge pull request #6 from schryer/master

Two small changes to make unicode.get_df work with Python 3.
Update README.rst
Update README.rst
Update README.rst
fixing tests for ensembl
add to_json method in devtools class
add 30% of the methods
add a method
add new class related to HGNC
pep8
fixing a python 3 typo
remove a useless import
update changelog
fixing a test
remove a useless print statement
Merge branch 'master' of https://github.com/cokelaer/bioservices
add bugtrack field in the setup
finalise ensembl module with test.
add more content-type in services.
first commit for clinvitae.py for access to clinvitae REST api