[browserify] Update definitions to match latest API. Add comments from documentation.

I've also inferred extra information through examining the source code, as particular options are not well-documented.

This also updates envify's typings to be more specific.

browserify/browserify-tests.ts

@@ -2,11 +2,51 @@
 
 import browserify = require("browserify");
 import fs = require("fs");
+import stream = require('stream');
 
-var b: BrowserifyObject = browserify();
+var bNoArg = browserify();
+
+var b = browserify({
+  baseDir: 'somewhere'
+});
 b.add('./browser/main.js');
-b.transform('deamdify');
-b.bundle().pipe(fs.createWriteStream('bundle.js'));
+b.transform('deamdify')
+  .transform(function (file) {
+    return new stream.Transform();
+  }).plugin((b, opts) => { return opts.l; }, {l: 3})
+  .require('foo', { expose: 'bar' })
+  .exclude('baz')
+  .ignore('bat')
+  .reset({ basedir: 'elsewhere' });
 
-var customBrowsify: Browserify = require("browserify");
+b.on('file', (file) => {
+  file += "";
+});
+
+b.external(bNoArg);
+
+var b2 = new browserify(['/some/File', {file: '/some/file' }, fs.createReadStream('/somewhere')], { builtins: ['buffer']})
+  .reset({
+    builtins: {
+      'buffer': './customBuffer'
+    }
+  });
+
+var customBrowsify = require("browserify");
 customBrowsify({entries: []});
+
+var b = browserify('./browser/main.js', {
+  noParse: ['jquery'],
+  debug: true,
+  foo: 'bar'
+});
+b.add('./browser/other.js');
+b.transform(function(file: string): NodeJS.ReadWriteStream {
+  return new stream.PassThrough();
+});
+
+var record_pipeline = b.pipeline.get('record');
+
+b.bundle().pipe(process.stdout);
+
+