Add support for requests verify and cert parameters
refactor dictionary lookup using get method
fix test
fix style
Add option to ignore InsecureRequestWarning issued by urllib3

Warning is issued when passing verify=False to requests or
when passing wildcard cert to requests in which the associated hostname does
not match.
See http://docs.python-requests.org/en/latest/user/advanced/#ssl-cert-verification.
Extend README.md - add SSL options examples
remove urllib3_warn option
Update README  -- note on urllib3 warning.
Merge pull request #13 from rtluckie/patch-1

Add Support for Requests' SSL Cert Verification Options