bitcoind: add missing api methods to export

lib/services/bitcoind.js

@@ -83,6 +83,10 @@ Bitcoin.prototype.getAPIMethods = function() {
     ['getBlock', this, this.getBlock, 1],
     ['getBlockHeader', this, this.getBlockHeader, 1],
     ['getBlockHashesByTimestamp', this, this.getBlockHashesByTimestamp, 2],
+    ['getBestBlockHash', this, this.getBestBlockHash, 0],
+    ['getInfo', this, this.getInfo, 0],
+    ['syncPercentage', this, this.syncPercentage, 0],
+    ['isSynced', this, this.isSynced, 0],
     ['getTransaction', this, this.getTransaction, 2],
     ['getTransactionWithBlockInfo', this, this.getTransactionWithBlockInfo, 2],
     ['sendTransaction', this, this.sendTransaction, 1],