Added rudimentary build system.

.gitignore

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+node_modules

Jakefile.js

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+var pkginfo = require('pkginfo')(module);
+var minify = require('jake-uglify').minify;
+
+var headerJS = "\
+/**\n\
+ * BitcoinJS-lib v"+exports.version+"-default\n\
+ * Copyright (c) 2011 BitcoinJS Project\n\
+ * \n\
+ * This program is free software; you can redistribute it and/or modify\n\
+ * it under the terms of the MIT license.\n\
+ */";
+
+task('default', ['build/bitcoinjs-min.js']);
+
+desc('General-purpose build containing most features');
+minify({'build/bitcoinjs-min.js': [
+  'src/crypto-js/crypto.js',
+  'src/crypto-js/sha256.js',
+  'src/crypto-js/ripemd160.js',
+  'src/jsbn/prng4.js',
+  'src/jsbn/rng.js',
+  'src/jsbn/jsbn.js',
+  'src/jsbn/jsbn2.js',
+
+  'src/jsbn/ec.js',
+  'src/jsbn/sec.js',
+  'src/events/eventemitter.js',
+  'src/bitcoin.js',
+  'src/util.js',
+  'src/base58.js',
+  
+  'src/address.js',
+  'src/ecdsa.js',
+  'src/eckey.js',
+  'src/opcode.js',
+  'src/script.js',
+  'src/transaction.js',
+
+  'src/wallet.js',
+  'src/txdb.js'
+]}, {
+  header: headerJS
+});

package.json

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+{
+  "name": "bitcoinjs-lib",
+  "version": "0.1.0",
+  "description": "Client-side Bitcoin JavaScript library",
+
+  "keywords": [
+    "bitcoin",
+    "browser",
+    "client",
+    "library"
+  ],
+
+  "author": "Stefan Thomas <justmoon@members.fsf.org> (http://www.justmoon.net)",
+
+  "repository" : {
+    "type" : "git",
+    "url" : "https://github.com/bitcoinjs/bitcoinjs-lib.git"
+  },
+
+  "devDependencies" : {
+    "pkginfo" : ">=0.2.1",
+    "jake-uglify" : ">=1.0.0"
+  }
+}