Add shorthand method toHex to Script

lib/script/script.js

@@ -206,6 +206,10 @@ Script.prototype.toString = function() {
   return str.substr(1);
 };
 
+Script.prototype.toHex = function() {
+  return this.toBuffer().toString('hex');
+};
+
 Script.prototype.inspect = function() {
   return '<Script: ' + this.toString() + '>';
 };

test/script/script.js

@@ -193,6 +193,14 @@ describe('Script', function() {
 
   });
 
+  describe('toHex', function() {
+    it('should return an hexa string "03010203" as expected from [3, 1, 2, 3]', function() {
+      var buf = new Buffer([3, 1, 2, 3]);
+      var script = Script.fromBuffer(buf);
+      script.toHex().should.equal('03010203');
+    });
+  });
+
   describe('#isDataOut', function() {
 
     it('should know this is a (blank) OP_RETURN script', function() {