block: adds getUTCDate function

src/block.js

@@ -132,12 +132,19 @@ Block.prototype.toHex = function(headersOnly) {
   return this.toBuffer(headersOnly).toString('hex')
 }
 
-Block.prototype.getId = function() {
-  return bufferutils.reverse(this.getHash()).toString('hex')
-}
-
 Block.prototype.getHash = function() {
   return crypto.hash256(this.toBuffer(true))
 }
 
+Block.prototype.getId = function() {
+  return bufferutils.reverse(this.getHash()).toString('hex')
+}
+
+Block.prototype.getUTCDate = function() {
+  var date = new Date(0) // epoch
+  date.setUTCSeconds(this.timestamp)
+
+  return date
+}
+
 module.exports = Block