Travis adjustment

Author: pitbulk

.travis.yml

@@ -1,8 +1,7 @@
 language: java
 jdk:
-  - openjdk7
+#  - openjdk7  #It seems openjdk temp fail on Travis
   - oraclejdk7
-before_install: cd core
 install: true
 after_success:
   - mvn clean test jacoco:report coveralls:report