Cross Reference: /external/autotest/docs

`Name`	`Date`	`Size`
Up to higher level directory
`best-practices.md`	21-Oct-2016	`25K`
`coding-style.md`	21-Oct-2016	`7.7K`
`test-droid.md`	21-Oct-2016	`4K`
`test-that.md`	21-Oct-2016	`3.3K`