added step for database initializaton

Using-your-own-server.md

@@ -17,6 +17,6 @@ Once the requirements are installed, continue with the following:
 2. cd into the TextSecure-Server directory
 3. cp config/sample.yml local.yml
 4. edit the local.yml with your details
-5. then say `mvn package; java -jar PATH-TO-JAR server local.yml`
-
-This will start the server.
+5. compile server with `mvn package`
+6. initialize database with `java -jar PATH-TO-JAR db migrate local.yml`
+7. start server with `java -jar PATH-TO-JAR server local.yml`