Test: Specify "Composite" in titlecase instead
Test: Specify "Composite" in titlecase instead

According to Xvfb's complaints in the Travis build output, that's how it
should be written instead:
https://travis-ci.org/anko/hudkit/builds/601235349#L767-L785

It works in all-caps on my dev machine without complaint.  But this
titlecase version works too. *shrug* :shipit:

anko/hudkit,anko/hudkit,anko/hudkit