title: How to make Zepto compatible with Browserify?
body: <p>I made some changes to Zepto and hope I can use it in Browserify:</p>
  
  <pre><code>➤➤ git diff
  diff --git a/package.json b/package.json
  index 294af90..e4f8fd1 100644
  --- a/package.json
  +++ b/package.json
  @@ -7,6 +7,7 @@
       , "dist": "coffee make dist"
       , "start": "coffee test/server.coffee"
     }
  +  , "main": "dist/zepto.js"
     , "repository": {
         "type": "git"
       , "url": "https://github.com/madrobby/zepto.git"
  diff --git a/src/zepto.js b/src/zepto.js
  index 93bfe18..cdf8929 100644
  --- a/src/zepto.js
  +++ b/src/zepto.js
  @@ -787,6 +787,17 @@ var Zepto = (function() {
     return $
   })()
  
  -// If `$` is not yet defined, point it to `Zepto`
  -window.Zepto = Zepto
  -'$' in window || (window.$ = Zepto)
  +// detect module loader like jQuery
  +// http://code.jquery.com/jquery-2.0.3.js
  +if ( typeof module === "object" &amp;&amp; module &amp;&amp; typeof module.exports === "object" ) {
  +  module.exports = Zepto;
  +} else {
  +  if ( typeof define === "function" &amp;&amp; define.amd ) {
  +    define( "zepto", [], function () { return Zepto; } );
  +  }
  +}
  +if ( typeof window === "object" &amp;&amp; typeof window.document === "object" ) {
  +  window.Zepto = Zepto
  +  // If `$` is not yet defined, point it to `Zepto`
  +  '$' in window || (window.$ = Zepto)  
  +}
  </code></pre>
  
  <p>But I got errors:</p>
  
  <pre><code>/usr/lib/node_modules/watchify/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:91
                          var dir = path.resolve(x, pkg.main);
                                                       ^
  TypeError: Cannot read property 'main' of undefined
      at /usr/lib/node_modules/watchify/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:91:54
      at load (/usr/lib/node_modules/watchify/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:54:43)
      at /usr/lib/node_modules/watchify/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:60:22
      at /usr/lib/node_modules/watchify/node_modules/browserify/node_modules/browser-resolve/node_modules/resolve/lib/async.js:16:47
      at Object.oncomplete (fs.js:107:15)
  </code></pre>
  
  <p>Is there any solution?</p>