Parse timestamps into time.Time types

WIP

Currently getting this error for tests:

```
projects/hieroglyphs master : go test
--- FAIL: TestEventParsing (0.00 seconds)
        hieroglyphs_test.go:41:
                Expected: 2014-01-20 13:26:16 -0800 PST
                Received: 2014-01-20 13:26:16 -0800 PST
FAIL
exit status 1
FAIL    _/Users/asenchi/projects/hieroglyphs    0.014s
```

Kind of annoying. :smile: