Add documentation on how to run unit testing (Closes #43)

- docker currently not supported for running unit testing /shrug
4 jobs for 43-unittests in 1 minute and 6 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Test
passed #2196
Go-py2.7

00:01:02

passed #2197
Go-py3.4

00:01:03

passed #2198
Go-py3.5

00:01:06

passed #2199
Go-py3.6

00:01:03

76.0%