Defaults files arg to ['test'] in CLI

README.md

@@ -212,6 +212,8 @@ using `sudo make install`. Example usage:
 
     nodeunit testmodule1.js testfolder [...]
 
+If no entry file specified, `test` defaults.
+
 The default test reporter uses color output, because I think that's more fun :) I
 intend to add a no-color option in future. To give you a feeling of the fun you'll
 be having writing tests, lets fix the example at the start of the README:

bin/nodeunit

@@ -101,10 +101,9 @@ args.forEach(function (arg) {
     }
 });
 
+// defaults to `test`
 if (files.length === 0) {
-    console.log('Files required.');
-    console.log(usage);
-    process.exit(1);
+    files = ['test'];
 }
 
 if (config_file) {

package.json

@@ -87,6 +87,6 @@
     "tap": ">=0.2.3"
   },
   "scripts": {
-    "test": "node ./bin/nodeunit test"
+    "test": "node ./bin/nodeunit"
   }
 }