Mention apm init command

docs/converting-a-text-mate-theme.md

@@ -23,7 +23,7 @@ terminal:
 apm help init
 ```
 
-You should see a message print out with all the possible `apm` commands.
+You should see a message print out with details about the `apm init` command.
 
 If you do not, launch Atom and run the _Atom > Install Shell Commmands_ menu
 to install the `apm` and `atom` commands.