Changed ims namespace http://www.imsglobal.org/LTI/v1p1/ltiIMGv1p1.html
- This works with bb 9.1.110082.0
- Fix: Caught an exception when returned xml is invalid.
Updated: gitignore file for rubymine.
Added: MIL specific gemspec
Added: IMS::LTI::OutcomeData outcome_graded flag to allow for teacher graded submissions from LTI.
 - Graded outcome +outcome_graded+ is a flag to specify whether the submission should be graded by the teacher
   It expects a 'true' or 'false' value graded by teacher or not, should set 'needs grading' in LMS if true.

        `provider.post_replace_result_with_data!(score,'graded' => 'true','url' => outcome_url)`

   Can also be used in conjunction with outcome_url to show url to a students state for grading