Issue #184: Added an integration test for RtGist.fork()
#192 
src/main/java/com/jcabi/github/mock/MkForks.java:44-46 has to be
resolved: Need to implement the methods of MkForks: 1) iterate,
returning a list of forks, and 2) create, which will create a new fork.
Don't forget to update the unit test class {@link MkForksTest}.
Merge branch 'master' of https://github.com/jcabi/jcabi-github into 192
#192 FIXING merge error
fixed issue #156
Added Request field to RtContents
#192
Fixing pull request comments
Issue 291. MkPublicKey.Json() method implemented. MkPublicKey and MkPublicKeys adding nodes to xml bug fixed.
Issue 291. MkPublicKeyTest one-time variables mistake fixed.
Merge branch 'master' of github.com:aistomin/jcabi-github into 291_1
Issue #343  - Implemented remove a deploy key API
Merge branch 'master' into 314
Issue #314 added RtContent class, Content#path and Content#repo methods
Issue #314 Implemented RtContentTest methods
Issue #314 Implemented RtContents.create()
Merge branch 'master' into issue184

Conflicts:
	src/test/java/com/jcabi/github/RtGistITCase.java
Issue #184: Improved RtGistITCase.forksGist()
Issue #184: Fixed documentation
Issue #218: Added integration tests for RtSearch.repos(), RtSearch.issues(), and RtSearch.users()
Implemented: RtHooksITCase.canFetchAllHooks, see issue #330.