change group id

Author: t-oster

pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>de.thomas_oster</groupId>
+    <groupId>de.thomas-oster</groupId>
     <artifactId>liblasercut</artifactId>
     <version>1.9-SNAPSHOT</version>
     <packaging>jar</packaging>