ShareKit/ShareKit — pull request #515 by kishikawakatsumi (2012-09-16 05:01:25+00:00)
Title: Fix double URI encode for extra OAuth parameters.

Fix double URI encode for extra OAuth parameters.
If set extra oauth parameters, for instance oath_calback, it makes signature invalid.Because of the each keys and values are encoded twice.
e.g. oauth_calback=http%253A%252F%252Fwww.example.com
fixed: oauth_calback=http%3A%2F%2Fwww.example.com