Merge pull request #40 from lthuangiang/master

#40: pull request issue #35 was implemented
Created GhIssueTest and fetchComments.
Initial commit for GhIssueTest.
Issue 42: Updated GhIssueTest.java.
#42: Fixed static analysis errors.
Issue #44: Added unit test for GhGist.read().
Added Issue #44: Added puzzle for executeRead method.
Issue #44: Added test for write() method.
Issue #43: Implemented test for GhPull.commits().
Issue #43: Added unit tests for files and merge methods.
Merge pull request #41 from lthuangiang/master

#41: pull request Issue #36 was implemented
Issue #44 removed DummyRequest in favor of FakeRequest.
Issue #44: Fixed static analysis errors.
Issue #42 Made changes based on review comments.
Merge pull request #46 from carlosmiranda/42

#46: pull request 42
Issue #44 updated GhGistTest to use MkContainer.
Issue #43 Updated GhPullTest to use MkContainer.
Issue #44
Changed test method names to make them more descriptive.
Updated writesFileContents() test method.
Merge pull request #51 from carlosmiranda/43

#51: pull request Issue #43: Implemented GhPullTest.java
Merge pull request #53 from lthuangiang/master

#53: pull request Issue #37 was implemented