add OpenJDK11 to CI matrix

SethTisue · SethTisue · commit f11d342a2922 · 2019-02-14T14:27:56.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -11,7 +11,9 @@ env:
 
 script: admin/build.sh
 
-jdk: oraclejdk8
+jdk:
+- oraclejdk8
+- openjdk11
 
 notifications:
   email:
