From 8a190e108f485456663a0d90aa32568f08c72719 Mon Sep 17 00:00:00 2001
From: Florent Vilmart <364568+flovilmart@users.noreply.github.com>
Date: Sun, 29 Jul 2018 13:06:37 -0400
Subject: [PATCH] Update CONTRIBUTING.md

---
 CONTRIBUTING.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 36b359f37..736fedf11 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -26,6 +26,21 @@ $ npm install # install all the node dependencies
 $ code . # launch vscode
 ```
 
+### Building the SDK
+
+The Parse JS SDK is built for three platforms:
+
+- The browser
+- nodejs
+- react-native
+
+When developing the SDK you can use `npm run watch` in order to rebuild your changes upon each saves.
+By default, the watch command will rebuild the SDK for the node platform. You can toggle this by setting the environment variable PARSE_BUILD. Valid values are:
+
+- node
+- browser
+- react-native
+
 ### Testing the code
 
 The SDK is tested through two lenses. unit tests are run with jest and integrationt tests with jasmine.