fixes, refactoring

pom.xml

@@ -8,7 +8,7 @@
 	<packaging>jar</packaging>
 
 	<name>ysoserial</name>
-	<url>http://maven.apache.org</url>
+	<url>https://github.com/frohoff/ysoserial/</url>
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -52,6 +52,7 @@
 			<plugin>
 		        <groupId>org.apache.maven.plugins</groupId>
 		        <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.20</version>
 		        <configuration>
 			        <systemPropertyVariables>
 			        	<java.rmi.server.useCodebaseOnly>false</java.rmi.server.useCodebaseOnly>
@@ -60,7 +61,7 @@
 		    </plugin>
 		</plugins>
 	</build>
-	
+
 	<repositories>
 		<repository>
 			<id>jenkins</id>
@@ -360,6 +361,6 @@
 				</dependency>
 			</dependencies>
 		</profile>
-		
+
 	</profiles>
 </project>