Add OpenJDK 8 to Travis build.
diff --git a/.travis.yml b/.travis.yml
index dd74238..605a9a8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@
 sudo: false
 
 jdk:
-  - openjdkjdk8
+  - openjdk8
   - oraclejdk8
 
 after_success: