Interim commit.
Ignored any editor backup files, as well as any tests.

The tests contain some sensitive information, but will be sanitized at
some time in the future.
Fixed the "Authorization" header; it was returning a 401 error.
End-of-day commit; GitHub.callGithubApi() is not properly mapping JSON
responses onto the provided struct.
Ran sources to "go fmt".
Added tests in, and updated the README and gitignore rules accordingly.
Some fixes.