refactored api tests
convering lib to robottelo
implemented suggestions in comments, mostly pep8
alphabeticaly organize imports in api/os
import before from import
removing line
Merge pull request #217 from elyezer/master

Update README file
last pep8 fixes © omaciel
lowercasing test_ files
Merge pull request #208 from AdamSaleh/api-requests

Refactored api tests
Clean up for Pull Request #208.

* Some PEP8 and pylint love;
* Fixed variable names to use lower_case_with_underscores format;
* Test classes should inherit BaseAPI first, followed by mixins;
Merge pull request #218 from omaciel/fix_api_from_adam

Clean up for Pull Request #208.
Remove test runners

* Remove robotello_runner.py runner
* Remove run-test.py runner
* Update the README file to remove the robottelo_runner.py section