Polish contribution

Closes gh-226

initializr-generator/src/main/groovy/io/spring/initializr/metadata/Dependency.groovy

@@ -61,6 +61,12 @@ class Dependency extends MetadataElement {
 	 */
 	String version
 
+	/**
+	 * The type, can be {@code null} to indicate that the default type
+	 * should be used (i.e. {@code jar}).
+	 */
+	String type
+
 	/**
 	 * Dependency mapping if an attribute of the dependency differs according to the
 	 * Spring Boot version. If no mapping matches, default attributes are used.
@@ -77,8 +83,6 @@ class Dependency extends MetadataElement {
 
 	String repository
 
-	String type
-
 	int weight
 
 	/**