Can't set language to bash with travis init

[ghost]

I'm trying to set up a bash-based repo like http://stackoverflow.com/questions/20449707/using-travis-ci-for-testing-on-unix-shell-scripts

I'm using 1.8.0 on Debian. When I run Travis init my repository is detected correctly but I can't set bash or shell as a language:

voltagex:~/src/rpi2-gstreamer-build$ travis init
Detected repository as voltagex/rpi2-gstreamer-build, is this correct? |yes| yes
Main programming language used: |Shell|
unknown language shell
voltagex:~/src/rpi2-gstreamer-build$ travis init
Main programming language used: |Shell| bash
unknown language bash