[arquillian/arquillian-extension-liferay#42] Prepare Travis to execute tests in JDK-8 and JDK-7
[arquillian/arquillian-extension-liferay#42] Prepare Travis to execute tests in JDK-8 and JDK-7

liferay-labs/arquillian-liferay,csierra/arquillian-extension-liferay,mdelapenya/arquillian-extension-liferay,arquillian/arquillian-extension-liferay,csierra/arquillian-liferay,mdelapenya/arquillian-extension-liferay,arquillian/arquillian-extension-liferay,cgoncas/arquillian-extension-liferay,liferay-labs/arquillian-liferay,csierra/arquillian-liferay,cgoncas/arquillian-extension-liferay,csierra/arquillian-extension-liferay