removed benchmarks from readme, updated tape

Author: themasch

README.md

@@ -36,38 +36,6 @@ These metadata files are simply bencoded dictionaries.
 npm install bencode
 ```
 
-## Performance
-
-### encode buffer
-
-package     | version | op/sec
------------ | ------- | ---------
-bencode     | 0.12.0  |  *47,692*
-dht.js      | 0.2.16  |   43,908
-dht-bencode | 0.1.2   |   35,670
-bencoding   | 0.0.1   |   31,942
-bncode      | 0.5.3   |   25,097
-btparse     | 1.0.2   |        -
-
-### decode to buffer
-
-package     | version | op/sec
------------ | ------- | ------
-bencode     | 0.12.0  |  129,326
-dht.js      | 0.2.16  |   71,639
-dht-bencode | 0.1.2   |   89,285
-bencoding   | 0.0.1   |   97,285
-bncode      | 0.5.3   |   16,567
-btparse     | 1.0.2   | *155,660*
-
-_Benchmarks run on an Intel Core i7-4600M @ 2.90Ghz with node v7.8.0 & GNU/Linux 4.4.39_
-
-To run the benchmarks simply use
-
-```
-npm run benchmark
-```
-
 ## Usage
 
 ```javascript

package.json

@@ -26,7 +26,7 @@
     "nanobench": "^2.1.0",
     "standard": "^9.0.2",
     "tap-spec": "~4.1.0",
-    "tape": "~4.6.0"
+    "tape": "^4.6.3"
   },
   "keywords": [
     "bdecode",