Update .travis.yml

Author: binarywang

.travis.yml

@@ -1,8 +1,14 @@
 language: java
+sudo: false
+install: true
+addons:
+  sonarqube:
+    token:
+      secure: "834110c7191f97ecb226970c46dcaff8e681da5a"
+
 jdk:
   - oraclejdk7
-
-script: "mvn clean package -Dmaven.test.skip=true"
+#script: "mvn clean package -Dmaven.test.skip=true"
 
 branches:
   only:
@@ -11,3 +17,10 @@ branches:
 notifications:
   email:
     - [email protected]
+    
+script:
+  - mvn clean org.jacoco:jacoco-maven-plugin:prepare-agent package sonar:sonar
+cache:
+  directories:
+    - '$HOME/.m2/repository'
+    - '$HOME/.sonar/cache'