Move documentation to the README.
Fix issues reported by go vet.

These issues were reported by `go vet` tool:

	google_oauth.go:106: possible formatting directive in Fatal call
	google_oauth.go:128: Println call ends with newline

The first one is clearly a bug but the second one might be intentional
to make the link stand out so I replaced the extra \n with another call
to `fmt.Println()`.
Tests for command-line parsing

- Removed the user option.  It's not used at the moment.
Merge pull request #10 from pcn/add-first-tests

Add first tests
Removed the user flag.  Now remove the test.
Add travis.yml
Merge pull request #11 from pcn/add-travis-support

Add travis support
Merge pull request #9 from rce/go-vet-issues

Fix issues reported by go vet.
Whoops, .travis.yml
Merge branch 'master' of github.com:pcn/gonetact
Doc update