added "install" command to override travis defaults

Author: aheusingfeld

.travis.yml

@@ -2,5 +2,7 @@ language: java
 jdk:
   - oraclejdk8
   - oraclejdk7
+  
+install: mvn install --quiet -DskipTests=true -Dmaven.javadoc.skip=true -B -V
 
-script: travis_wait mvn -q --fail-at-end verify -Ptomee-embedded-arquillian
+script: travis_wait mvn -q --fail-at-end install -Ptomee-embedded-arquillian