Merge pull request facebook#6195 from mxstbr/perf-links

Add benchling engineering articles about perf to docs

Author: jimfb

docs/docs/10.9-perf.md

@@ -10,6 +10,8 @@ React is usually quite fast out of the box. However, in situations where you nee
 
 In addition to giving you an overview of your app's overall performance, ReactPerf is a profiling tool that tells you exactly where you need to put these hooks.
 
+See these two articles by the [Benchling Engineering Team](http://benchling.engineering) for a in-depth introduction to performance tooling: ["Performance Engineering with React"](http://benchling.engineering/performance-engineering-with-react/) and ["A Deep Dive into React Perf Debugging"](http://benchling.engineering/deep-dive-react-perf-debugging/)!
+
 ## General API
 
 The `Perf` object documented here is exposed as `require('react-addons-perf')` and can be used with React in development mode only. You should not include this bundle when building your app for production.