Add CommonJS support

Tokenizer.js

@@ -1,3 +1,8 @@
+if (typeof exports !== 'undefined') {
+	var window = {Unicode: require('./unicodecategories').Unicode};
+	exports.Tokenizer = Tokenizer;
+}
+
 /*!
  * Tokenizer for JavaScript / ECMAScript 5
  * (c) Peter van der Zee, qfox.nl
@@ -6,7 +11,7 @@
 /**
  * @param {Object} inp
  */
-window.Tokenizer = function(inp){
+function Tokenizer(inp){
 	this.inp = inp||'';
 	// replace all other line terminators with \n (leave \r\n in tact though). we should probably remove the shadowInp when finished...
 	// only replace \r if it is not followed by a \n else \r\n would become \n\n causing a double newline where it is just a single
@@ -1052,4 +1057,4 @@ Tokenizer.Error = {
 	QuantifierRequiresNumber: {msg:'Quantifier curly requires at least one digit before the comma'},
 	QuantifierRequiresClosingCurly: {msg:'Quantifier curly requires to be closed'},
 	MissingOpeningCurly: {msg:'Encountered closing quantifier curly without seeing an opening curly'}
-};
+};

ZeParser.js

@@ -1,3 +1,8 @@
+if (typeof exports !== 'undefined') {
+	var Tokenizer = require('./tokenizer').Tokenizer;
+	exports.ZeParser = ZeParser;
+}
+
 /**
  * This is my js Parser: Ze. It's actually the post-dev pre-cleanup version. Clearly.
  * Some optimizations have been applied :)
@@ -6,7 +11,7 @@
  * @param {Tokenizer} tok
  * @param {Array} stack The tokens will be put in this array. If you're looking for the AST, this would be it :)
  */
-window.ZeParser = function(inp, tok, stack, simple){
+function ZeParser(inp, tok, stack, simple){
 	this.input = inp;
 	this.tokenizer = tok;
 	this.stack = stack;

index.js

@@ -0,0 +1 @@
+exports.ZeParser = require('./ZeParser').ZeParser;