Closes #57 Add support for urllib

[odarbelaeze]

Some SDK's use urllib instead of urllib3, we use pook to intercept and mock the responses regardless of what the SDK uses underneat.

This PR includes the code that we use to "fix" the HTTPInterceptor to behave well with urllib in python3.

Also this PR is a bribe to try and get a 1.0.2 release :pray: :smile:

Closes #57