dded K2 to the list of alumni

Did not add anyone else. This points to my github repo, rather than a
linkedin account
Merge branch 'master' of github.com:masukomi/git_101 into adding_myself_to_alumni_file

Conflicts:
	alumni.md
Merge pull request #1 from kgf/adding_myself_to_alumni_file

Added K2 to the list of alumni