Used placeholder

Simple modifications to bootWHMCS to use placeholders, because putting values in makes things little akward, if not handeled correctly.
![screenshot from 2014-10-05 20 02 58](https://cloud.githubusercontent.com/assets/4953629/4519249/e18d8dda-4cb4-11e4-9df4-1e54a0ecb37d.png)