Show available erlang/otp distributions on build

Josh Price · web-flow · commit 566ba7178229 · 2016-06-10T10:17:37.000+10:00
diff --git a/.travis.yml b/.travis.yml
@@ -8,3 +8,6 @@ otp_release:
   - 18.2.4
   - 18.3.3
   - 19.0-rc.1
+
+before_script:
+  - kerl list installations
