Updated the IBMBackend to work with the new API.

Updated the IBMBackend to work with the new API and added a get_probabilities function to the IBM back-end.

Hotfix/main ibm api url (ProjectQ-Framework#5)

Updated the IBM API URL to the main URL, fixed issue with Python2 raw_input, added coverage and Travis CI badges to readme, and fixed some small bugs in docs.

Merge pull request ProjectQ-Framework#4 from ProjectQ-Framework/hotfi…

…x/pypi_manifest

Hotfix/pypi manifest

ProjectQ v0.1 developed by Thomas Haener and Damian S. Steiger at ETH…

… Zurich in 2016.