include snapshot url in the wrapper

Author: jdaugherty

grails-wrapper/src/main/java/grails/init/GrailsUpdater.java

@@ -156,6 +156,9 @@ private boolean updateJar(GrailsWrapperRepo repo, GrailsVersion version, String
         try {
             File downloadedJar = File.createTempFile(localJarFilename, jarFileExtension);
             String wrapperUrl = repo.getFileUrl(version, remoteJarFilename + jarFileExtension);
+            if(snapshotVersion != null) {
+                System.out.println("... Using Snapshot URL: " + wrapperUrl);
+            }
 
             long contentLength = -1;
             InputStream inputStream;