Update README.md

Move up my addition

README.md

@@ -844,6 +844,8 @@ As a potential alternative, @mhart (a Node contributor) has some [Docker images
 
 To remove `nvm` manually, execute the following:
 
+First, use `nvm unload` to remove the nvm command from your terminal session. then:
+
 ```sh
 $ rm -rf "$NVM_DIR"
 ```
@@ -855,7 +857,6 @@ export NVM_DIR="$HOME/.nvm"
 [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm
 [[ -r $NVM_DIR/bash_completion ]] && \. $NVM_DIR/bash_completion
 ```
-Finally, use `nvm unload` to remove the nvm command from your terminal session.
 
 ## Docker For Development Environment