Add https support for connecting to Unfuddle

Unfuddle seems to now use https for connections, so I just made some modifications to use https.

The Gem List used to test the branch:

  * activesupport (2.3.4)
  * builder (2.1.2)
  * bundler (1.1.4)
  * crack (0.3.2)
  * faraday (0.8.7)
  * google_drive (0.3.4)
  * graft (0.1.1)
  * happymapper (0.4.0)
  * hpricot (0.6.164)
  * httpauth (0.2.0)
  * i18n (0.6.1)
  * json (1.7.7)
  * jwt (0.1.8)
  * libxml-ruby (2.6.0)
  * metaclass (0.0.1)
  * mhennemeyer-matchy (0.3.3)
  * mime-types (1.22)
  * mocha (0.13.3)
  * multi_json (1.7.2)
  * multi_xml (0.5.3)
  * multipart-post (1.2.0)
  * nokogiri (1.5.9)
  * nokogiri-happymapper (0.5.6)
  * oauth (0.4.7)
  * oauth2 (0.9.1)
  * pivotal-tracker (0.5.10)
  * rack (1.5.2)
  * rest-client (1.6.7)
  * shoulda (3.0.1)
  * shoulda-context (1.0.2)
  * shoulda-matchers (1.0.0)
  * throat-punch (0.2.3)
  * tzinfo (0.3.12)
  * vigetlabs-unfuzzle (0.1.2)