Removed .ruby-version
Removed .ruby-version

Oga doesn't really require an exact version during development, so lets get rid
of this.

ttasanen/oga,dfockler/oga,ttasanen/oga,jeffreybaird/oga,jeffreybaird/oga,dfockler/oga,ttasanen/oga,altmetric/oga,YorickPeterse/oga,YorickPeterse/oga,altmetric/oga,dfockler/oga,jeffreybaird/oga,jeffreybaird/oga,YorickPeterse/oga,jeffreybaird/oga,ttasanen/oga,YorickPeterse/oga,dfockler/oga,altmetric/oga,dfockler/oga,ttasanen/oga,altmetric/oga,altmetric/oga,YorickPeterse/oga