Merge pull request #6462 from SvenDowideit/pr_out_fixup_small_formatting

fixup small formatting

docs/sources/userguide/usingdocker.md

@@ -183,6 +183,16 @@ see the application.
 
 Our Python application is live!
 
+> **Note:**
+> If you have used boot2docker on OSX you'll need to get the IP of the virtual
+> host instead of using localhost. You can do this by running the following in
+> the boot2docker shell.
+> 
+>     $ boot2docker ip
+>     The VM's Host only interface IP address is: 192.168.59.103
+> 
+> In this case you'd browse to http://192.168.59.103:49155 for the above example.
+
 ## A Network Port Shortcut
 
 Using the `docker ps` command to return the mapped port is a bit clumsy so