Merge pull request #55 from coinpunk/opcodecleanups

new Opcode() is not used

src/opcode.js

@@ -1,12 +1,5 @@
-var Opcode = function (num) {
-  this.code = num;
-};
-
-Opcode.prototype.toString = function () {
-  return Opcode.reverseMap[this.code];
-};
-
-Opcode.map = {
+Opcode = {
+    map: {
         // push value
         OP_0         : 0,
         OP_FALSE     : 0,
@@ -143,12 +136,12 @@ Opcode.map = {
         OP_PUBKEYHASH    : 253,
         OP_PUBKEY        : 254,
         OP_INVALIDOPCODE : 255
-};
-
-Opcode.reverseMap = [];
-
-for (var i in Opcode.map) {
-  Opcode.reverseMap[Opcode.map[i]] = i;
+    },
+    reverseMap: []
 }
 
-module.exports = Opcode;
+for(var i in Opcode.map) {
+    Opcode.reverseMap[Opcode.map[i]] = i
+}
+
+module.exports = Opcode