Added getBranch() to simplify pulling the branch out of the refs.

src/main/java/com/messners/gitlab/api/webhook/PushEvent.java

@@ -7,6 +7,8 @@ import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
 
+import org.codehaus.jackson.annotate.JsonIgnore;
+
 import com.messners.gitlab.api.Commit;
 import com.messners.gitlab.api.Repository;
 
@@ -95,4 +97,28 @@ public class PushEvent {
 	public void setUserName (String userName) {
 		this.userName = userName;
 	}
+	
+	/**
+	 * Gets the branch name from the ref.  Will return null if the ref does not start with "refs/heads/". 
+	 * 
+	 * @return the branch name from the ref
+	 */
+	@JsonIgnore
+	public String getBranch () {
+		
+		String ref = getRef();
+		if (ref == null || ref.trim().length() == 0) {
+			return (null);
+		}
+		
+		ref = ref.trim();	
+		int refsHeadsIndex = ref.indexOf(REFS_HEADS);
+		if 	(refsHeadsIndex != 0) {
+			return (null);
+		}
+		
+		return (ref.substring(REFS_HEADS.length()));
+	}	
+	
+	private static final String REFS_HEADS = "refs/heads/";
 }