bench: update benchmark results

bench/README.md

@@ -1,32 +1,29 @@
 benchmarks
 ==========
 
-**2015-07-03** Latest results, using `Node.js@0.12` and latest versions of modules:
+**2016-04-15** Latest results, using `Node.js@4` and latest versions of modules:
 
 * `enb@0.15.0`
 * `scan-level@0.0.4`
 
 ```
-                      bem-walk
-           13,913 op/s » `flat` level
-            4,860 op/s » `nested` level
-              223 op/s » `bem-bl`
-              152 op/s » `bem-core` + `bem-components`
+         flat level
+bem-walk x 11,838 ops/sec ±4.54% (74 runs sampled) mean 0.08 ms
+     enb x 10,351 ops/sec ±0.96% (82 runs sampled) mean 0.10 ms
+   scanl x 12,711 ops/sec ±2.40% (82 runs sampled) mean 0.08 ms
 
-                       enb@0.x
-            8,894 op/s » `flat` level
-            5,829 op/s » `nested` level
-              150 op/s » `bem-bl`
-               86 op/s » `bem-core` + `bem-components`
+         nested level
+bem-walk x 4,803 ops/sec ±1.89% (81 runs sampled) mean 0.21 ms
+     enb x 5,996 ops/sec ±1.17% (77 runs sampled) mean 0.17 ms
+   scanl x 4,412 ops/sec ±3.32% (76 runs sampled) mean 0.23 ms
 
-                       scan-level
-           11,317 op/s » `flat` level
-            4,909 op/s » `nested` level
-              140 op/s » `bem-bl`
-               84 op/s » `bem-core` + `bem-components`
+         bem-bl
+bem-walk x 202 ops/sec ±2.25% (76 runs sampled) mean 4.96 ms
+     enb x 145 ops/sec ±1.79% (81 runs sampled) mean 6.92 ms
+   scanl x 144 ops/sec ±1.67% (82 runs sampled) mean 6.96 ms
 
-
-   Suites:  3
-   Benches: 12
-   Elapsed: 17,992.13 ms
+         bem-components
+bem-walk x 133 ops/sec ±2.20% (76 runs sampled) mean 7.52 ms
+     enb x 88.64 ops/sec ±2.29% (81 runs sampled) mean 11.28 ms
+   scanl x 84.90 ops/sec ±2.57% (78 runs sampled) mean 11.78 ms
 ```