start to split into node commonjs style modules

- no longer is the global Bitcoin used for modules
- cleaner and more maintainable code
- add more tests

test/ec.js

@@ -0,0 +1,20 @@
+var assert = require('assert');
+var sec = require('../src/jsbn/sec');
+var ecdsa = require('../').ecdsa;
+
+var ecparams = sec('secp256k1');
+
+test("Point multiplication", function () {
+    var G = ecparams.getG();
+    var n = ecparams.getN();
+
+    assert.ok(G.multiply(n).isInfinity(), "Gn is infinite");
+
+    var k = ecdsa.getBigRandom(n);
+    var P = G.multiply(k);
+    assert.ok(!P.isInfinity(), "kG is not infinite");
+    assert.ok(P.isOnCurve(), "kG on curve");
+    assert.ok(P.multiply(n).isInfinity(), "kGn is infinite");
+
+    assert.ok(P.validate(), "kG validates as a public key");
+});