Modified travis YAML file

Modified nexus-staging-maven-plugin version

Modified travis JDK to use OpenJDK10

Author: Anthony Gauthier

.travis.yml

@@ -1,3 +1,8 @@
 language: java
 jdk:
-- oraclejdk9
+  - openjdk10
+
+sudo: true
+cache:
+  directories:
+    - $HOME/.m2

pom.xml

@@ -199,7 +199,7 @@
 			<plugin>
 				<groupId>org.sonatype.plugins</groupId>
 				<artifactId>nexus-staging-maven-plugin</artifactId>
-				<version>1.6.7</version>
+				<version>1.6.8</version>
 				<extensions>true</extensions>
 				<configuration>
 					<serverId>ossrh</serverId>