refactored use of deprecated method

Author: jirka.pinkas@gmail.com

src/test/java/cz/jiripinkas/jsitemapgenerator/generator/SitemapGeneratorTest.java

@@ -105,7 +105,7 @@ public void testConstructSitemap() throws Exception {
 	@Test
 	public void testSaveSitemap() throws Exception {
 		File tmpFile = File.createTempFile("test", "sitemap");
-		sitemapGenerator.saveSitemap(tmpFile, sitemapGenerator.toStringArray());
+		sitemapGenerator.toFile(tmpFile);
 		try {
 			TestUtil.testSitemapXsdFile(tmpFile, new File("sitemap.xsd"));
 		} finally {