Development.md

@@ -10,6 +10,17 @@ git submodule update --remote
 
 # Fetch and pull from submodules repositories
 git submodule update --init --recursive --remote
+```
+### Update submodule
+```
+# Pull the submodule new commits at the submodules path and at this repository top level will have:
+git diff
+    modified:   source/drivers/li-mt9m021 (new commits)
+
+git add source/drivers/li-mt9m021
+git commit -m "Update MT9M021 submodule to v0.n.0"
+git push
+
 ```
 
 ### Adding a Driver