.travis.yml: enable checking by pmd/checkstyle/license plugins and failing the build when there is any warnings/errors.

Author: php-coder

.travis.yml

@@ -1,5 +1,10 @@
 language: java
-script: mvn verify jasmine:test
+script:
+  - mvn checkstyle:check -Dcheckstyle.violationSeverity=warning
+  - mvn pmd:check
+  - mvn license:check
+  - mvn verify
+  - mvn jasmine:test
 after_success: mvn jacoco:prepare-agent test jacoco:report coveralls:jacoco
 
 jdk:

pom.xml

@@ -730,7 +730,6 @@
 					<consoleOutput>true</consoleOutput>
 					<includeTestSourceDirectory>true</includeTestSourceDirectory>
 					<linkXRef>false</linkXRef>
-					<failOnViolation>false</failOnViolation>
 					<configLocation>
 						${basedir}/src/main/config/checkstyle.xml
 					</configLocation>
@@ -746,7 +745,6 @@
 				<version>${pmd.plugin.version}</version>
 				<configuration>
 					<linkXRef>false</linkXRef>
-					<failOnViolation>false</failOnViolation>
 					<verbose>true</verbose>
 					<targetJdk>${java.version}</targetJdk>
 					<rulesets>