Only run jacoco on Travis builds

.travis.yml

@@ -1,5 +1,6 @@
 language: java
 before_install: sudo pip install codecov
+script: mvn -Pjacoco test
 jdk:
   - oraclejdk7
   - openjdk7

pom.xml

@@ -141,10 +141,6 @@
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>clirr-maven-plugin</artifactId>
       </plugin>
-      <plugin>
-        <groupId>org.jacoco</groupId>
-        <artifactId>jacoco-maven-plugin</artifactId>
-      </plugin>
     </plugins>
     <pluginManagement>
       <plugins>
@@ -662,6 +658,17 @@
         </plugins>
       </build>
     </profile>
+    <profile>
+      <id>jacoco</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.jacoco</groupId>
+            <artifactId>jacoco-maven-plugin</artifactId>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
   </profiles>
 
 </project>