Http-request-randomizer

* Allowing log_level to be set during instantiation of RequestProxy (68) through (67)

* Dropped support for python 2.7
* Fix urllib3 proxy scheme failures
* Added a way to filter proxies by protocol
* Fix PremProxy provider
* Fix user-agent package issues

Release notes:
* Introduced a new proxy object with attributes: address (ip, port), anonymity level (enum), country, protocols, and tunnel 31
* Extended existing parsers to capture the extra proxy information 30
* More testing for existing parsers and for new proxyObject and AnonymityLevel (enum) 12
* Bug fixes for Samair/Premtproxy 33

* Package naming refactor to avoid conflicts with http library
* Error handling
* Custom exceptions
* Integrated codecov with travis builds
* Pypandoc Hotfix
* Python 3 print function

Major: Changed project path, fixed SemairProxy parser, fixed setup.py to include agents_data
Minor: Updated Readme with usage example