added default value for StringParameters

configuration/src/main/java/de/muehlencord/shared/configuration/StringParameter.java

@@ -17,6 +17,16 @@ public class StringParameter extends Parameter<String> {
         super(name, new StringStringConverter(), true);
     }
     
+    /**
+     * creates a new mandatory parameter object using default string converter
+     *
+     * @param name the name of the parameter
+     */
+    public StringParameter(String name, String defaultValue) {
+        super(name, new StringStringConverter(), true);
+        this.defaultValue = defaultValue;
+    }    
+
     /**
      * creates a new mandatory parameter object
      *