add hardcoded tokens #8

- added `%wptm_domain%` domain token.

Example usage:
![code](https://cloud.githubusercontent.com/assets/2107541/3807196/9fed5cfe-1c60-11e4-93b1-e9f2c4d36678.jpg)

Output (domain mapped):
![mapped](https://cloud.githubusercontent.com/assets/2107541/3807199/b45db152-1c60-11e4-993f-ff981d4f06be.jpg)

Output (not mapped):
![notmapped](https://cloud.githubusercontent.com/assets/2107541/3807201/c4127948-1c60-11e4-9088-571ab4ae9c7b.jpg)

Maybe it's better to leave www. on the domain name if that is what's being used?