Add vulcanize to tools.

tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/Stream.js

Index: tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/Stream.js
diff --git a/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/Stream.js b/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/Stream.js
new file mode 100644
index 0000000000000000000000000000000000000000..29a819b1b7f6be09e30e30512511377a5ca1acda
--- /dev/null
+++ b/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/Stream.js
@@ -0,0 +1,35 @@
+module.exports = Stream;
+
+var Parser = require("./WritableStream.js");
+
+function Stream(options){
+	Parser.call(this, new Cbs(this), options);
+}
+
+require("util").inherits(Stream, Parser);
+
+Stream.prototype.readable = true;
+
+function Cbs(scope){
+	this.scope = scope;
+}
+
+var EVENTS = require("../").EVENTS;
+
+Object.keys(EVENTS).forEach(function(name){
+	if(EVENTS[name] === 0){
+		Cbs.prototype["on" + name] = function(){
+			this.scope.emit(name);
+		};
+	} else if(EVENTS[name] === 1){
+		Cbs.prototype["on" + name] = function(a){
+			this.scope.emit(name, a);
+		};
+	} else if(EVENTS[name] === 2){
+		Cbs.prototype["on" + name] = function(a, b){
+			this.scope.emit(name, a, b);
+		};
+	} else {
+		throw Error("wrong number of arguments!");
+	}
+});