bump deps.

Author: ctalkington

package.json

@@ -29,10 +29,10 @@
     "buffer-crc32": "~0.2.1",
     "crc32-stream": "~0.3.1",
     "node-int64": "~0.4.0",
-    "readable-stream": "~1.0.26"
+    "readable-stream": "~2.0.0"
   },
   "devDependencies": {
-    "chai": "~3.3.0",
+    "chai": "~3.4.0",
     "mocha": "~2.3.3",
     "rimraf": "~2.4.3",
     "mkdirp": "~0.5.0"