replace individual template options with a single one (--view <engine>) ...

...fix #41 :circus_tent: :cow:
@Fishrock123 the `indexOf()` will take care of `hhjsss` ([screen](https://cloud.githubusercontent.com/assets/1137314/4085895/bcc5c004-2f26-11e4-895a-efe9ec197024.png))

IMHO it's easier to read, understand and abstract later (gather all mentions of these names in one place)