pep8 compliant
Using octopus and pycurl to make requests

It is much faster than requests, so I remove requests dependency.
Replaced StringIO with cStringIO
Merge pull request #1 from marcelometal/faster

Using octopus and pycurl to make requests
support for github hight definition avatars

Signed-off-by: Wilson Júnior <wilsonpjunior@gmail.com>
Replace the api url to get max numbers of contributors

Signed-off-by: Wilson Júnior <wilsonpjunior@gmail.com>