Switch everything to through2 (and update it)

Author: zertosh

package.json

@@ -15,15 +15,14 @@
     "duplexer2": "0.0.2",
     "inherits": "^2.0.1",
     "parents": "^1.0.0",
-    "readable-stream": "^1.0.27-1",
+    "readable-stream": "^1.1.13",
     "resolve": "^1.1.3",
     "stream-combiner2": "~1.0.0",
     "subarg": "^1.0.0",
-    "through2": "~0.4.1",
+    "through2": "^1.0.0",
     "xtend": "^4.0.0"
   },
   "devDependencies": {
-    "through": "~2.3.4",
     "tape": "~2.12.3",
     "browser-pack": "^4.0.3"
   },

readme.markdown

@@ -146,12 +146,12 @@ If the transform is a string, it is treated as a module name that will resolve
 to a module that is expected to follow this format:
 
 ``` js
-var through = require('through');
+var through = require('through2');
 module.exports = function (file) { return through() };
 ```
 
 You don't necessarily need to use the
-[through](https://github.com/dominictarr/through) module to create a
+[through2](https://github.com/rvagg/through2) module to create a
 readable/writable filter stream for transforming file contents, but this is an
 easy way to do it.