update the MXNET install guide

update the submodule checkout issue
msracver · Apr 10, 2018 · f46db5d · f46db5d
1 parent 2b47f67
commit f46db5d
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/README.md b/README.md
@@ -130,6 +130,7 @@ git clone https://github.com/msracver/Deformable-ConvNets.git
 	git clone --recursive https://github.com/dmlc/mxnet.git
 	git checkout 998378a
 	git submodule update
+	# if it's the first time to checkout, just use: git submodule update --init --recursive
 	```
 	3.3 Compile MXNet
 	```