add erc20 and modify basic chain folder

src/basic_chain/js/test/transaction.js

@@ -0,0 +1,40 @@
+'use strict';
+
+var crypto = require('crypto');
+var ed = require('ed25519');
+var BlockChain = require("../blockchain");
+var Consensus = require("../consensus/dpos");
+
+
+let blockchains = [];
+for (var i = 0; i < 20; ++i) {
+
+    var password = `I am tester ${i}!`;
+    var hash = crypto.createHash('sha256').update(password).digest();
+    var keypair = ed.MakeKeypair(hash);
+    console.log(`node ${i} address: ${keypair.publicKey.toString('hex')}`);
+
+    let blockchain = new BlockChain(Consensus, keypair, i);
+    blockchain.start();
+    blockchains.push(blockchain);
+}
+
+// setTimeout(() => {
+//     for (var i = 0; i < 20; ++i) {
+//         console.log(`${i} --> ${blockchains[i].list_peers()}`);
+//     }
+// }, 3000);
+
+setTimeout(() => {
+    let address = blockchains[6].get_public_key();
+    blockchains[0].create_transaction(address, 30);
+}, 3000);
+
+async function get_balance() {
+    let amount = await blockchains[0].get_balance();
+    console.log(`node 0 balance: ${amount}`);
+    amount = await blockchains[6].get_balance();
+    console.log(`node 6 balance: ${amount}`);
+}
+
+setInterval(get_balance, 10000);