Update with tab completion for kubectl

Update with tab completion for kubectl

docs/02-client-tools.md

@@ -99,6 +99,13 @@ chmod +x kubectl
 ```
 sudo mv kubectl /usr/local/bin/
 ```
+The following steps will enable shell tab completion on kubectl while using bash:
+
+```
+echo "source <(kubectl completion bash)" >> ~/.bashrc && bash
+```
+>You can also omit the "&& bash" and reload the shell later. 
+>This will only enable tab completion for your current user.
 
 ### Verification