add node modules to repo

node_modules/traverse/test/negative.js

@@ -0,0 +1,20 @@
+var Traverse = require('traverse');
+var assert = require('assert');
+
+exports['negative update test'] = function () {
+    var obj = [ 5, 6, -3, [ 7, 8, -2, 1 ], { f : 10, g : -13 } ];
+    var fixed = Traverse.map(obj, function (x) {
+        if (x < 0) this.update(x + 128);
+    });
+    
+    assert.deepEqual(fixed,
+        [ 5, 6, 125, [ 7, 8, 126, 1 ], { f: 10, g: 115 } ],
+        'Negative values += 128'
+    );
+    
+    assert.deepEqual(obj,
+        [ 5, 6, -3, [ 7, 8, -2, 1 ], { f: 10, g: -13 } ],
+        'Original references not modified'
+    );
+}
+