rexx: Add `rexx` to Travis CI matrix

diff --git a/.travis.yml b/.travis.yml
index 3a53dd5..f482183 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -60,6 +60,7 @@ matrix:
     - {env: IMPL=python,    services: [docker]}
     - {env: IMPL=r,         services: [docker]}
     - {env: IMPL=racket,    services: [docker]}
+    - {env: IMPL=rexx,      services: [docker]}
     - {env: IMPL=rpython,   services: [docker]}
     - {env: IMPL=ruby,      services: [docker]}
     - {env: IMPL=rust,      services: [docker]}