Merge pull request #38 from chrishkchris/test

add instruction: how to test locally
diff --git a/docs-site/README.md b/docs-site/README.md
index 49cd920..0a116e3 100644
--- a/docs-site/README.md
+++ b/docs-site/README.md
@@ -35,6 +35,12 @@
 
 The generated html files are under `website/build/singa-doc/`.
 
+To host the website locally for testing, under `website/build/singa-doc/` type:
+
+```sh
+$ python -m http.server
+```
+
 ## Update and Add Pages
 
 ### Navigation Bar