Update tag pattern and gitignore for maven release plugin.

.gitignore

diff --git a/.gitignore b/.gitignore
index 3d41d01..560ddee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,10 @@
 target
+
+# IntelliJ
 *.iml
 *.ipr
 .idea
+
+# Maven Relase
+pom.xml.*
+release.properties

pom.xml

diff --git a/pom.xml b/pom.xml
index a32eaf8..0df0df3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -89,6 +89,9 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-release-plugin</artifactId>
         <version>2.4.1</version>
+        <configuration>
+          <tagNameFormat>v@{project.version}</tagNameFormat>
+        </configuration>
       </plugin>
     </plugins>
   </build>