Merge pull request elastic#6 from dadoonet/master

Update maven assembly plugin version to 2.3

Author: kimchy

.gitignore

@@ -5,3 +5,6 @@
 /target
 .DS_Store
 *.iml
+/.project
+/.settings
+/.classpath

pom.xml

@@ -129,7 +129,7 @@
             </plugin>
             <plugin>
                 <artifactId>maven-assembly-plugin</artifactId>
-                <version>2.2.2</version>
+                <version>2.3</version>
                 <configuration>
                     <appendAssemblyId>false</appendAssemblyId>
                     <outputDirectory>${project.build.directory}/releases/</outputDirectory>