Add Objective-C++ to languages.yml
Add Objective-C++ samples
Update samples
Merge branch 'pr/411' into obj_cpp

Conflicts:
	lib/linguist/samples.json
Merge branch 'master' into obj_cpp

Conflicts:
	lib/linguist/samples.json
Merge branch 'master' into obj_cpp

Conflicts:
	lib/linguist/samples.json
Merge pull request #882 from github/obj_cpp

Updating Obj C++ PR so that it merges cleanly