1 files changed, 13 insertions, 0 deletions
diff --git a/README.md b/README.md
index 30a905f..beb81d0 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,16 @@
 
 2. Open browser and go to http://localhost:4000
 
+##Setting environment variable 
+
+####For test server
+
+    `export NODE_ENV="testing"`
+
+####For development
+
+    `export NODE_ENV="development"`
+
+####For production server
+
+    `export NODE_ENV="production"`