moved benchmark lox files to separate folder

benchmark/zoo_batch.lox

@@ -0,0 +1,36 @@
+class Zoo {
+  init() {
+    this.aarvark  = 1;
+    this.baboon   = 1;
+    this.cat      = 1;
+    this.donkey   = 1;
+    this.elephant = 1;
+    this.fox      = 1;
+  }
+  ant()    { return this.aarvark; }
+  banana() { return this.baboon; }
+  tuna()   { return this.cat; }
+  hay()    { return this.donkey; }
+  grass()  { return this.elephant; }
+  mouse()  { return this.fox; }
+}
+
+var zoo = Zoo();
+var sum = 0;
+var start = clock();
+var batch = 0;
+while (clock() - start < 10) {
+  for (var i = 0; i < 10000; i = i + 1) {
+    sum = sum + zoo.ant()
+              + zoo.banana()
+              + zoo.tuna()
+              + zoo.hay()
+              + zoo.grass()
+              + zoo.mouse();
+  }
+  batch = batch + 1;
+}
+
+print sum;
+print batch;
+print clock() - start;