Update PSI README

9468305 · 9468305 · commit cd429a821e00 · 2019-05-16T00:15:03.000+08:00
diff --git a/PageSpeedInsights/README.md b/PageSpeedInsights/README.md
@@ -2,9 +2,10 @@ PageSpeed Insights
 --------
 With Google Cloud Platform / Cloud Functions.
 
-Setup
+### Setup
+
 > pip3 install -r requirements.txt
 
-or
-> pip3 install --upgrade requests  
-> pip3 install --upgrade google-api-python-client
+### Doc
+
+[前端DevOps之PageSpeed Insights](https://www.jianshu.com/p/b64722af06fa)
