Cross Reference: /build/soong/docs

`Name`	`Date`	`Size`
Up to higher level directory
`after.png`	21-Aug-2018	`49.8K`
`before.png`	21-Aug-2018	`35K`
`best_practices.md`	21-Aug-2018	`7.3K`
`clion.md`	21-Aug-2018	`1.8K`
`perf.md`	21-Aug-2018	`9.8K`
`trace_example.png`	21-Aug-2018	`335.5K`