add balance to accounts

close #11

src/data_handler.ts

@@ -158,9 +158,7 @@ export class DataHandler {
       ctx.log.info(
         `New endowed account: ${endowed.address} received initial balance of ${endowed.amount} tokens`
       );
-      const account = await this.getOrCreateAccount(ctx, endowed.address);
-      account.balance = endowed.amount;
-      this.data.accounts.set(endowed.address, account);
+      await this.updateAccountBalance(ctx, endowed.address, endowed.amount);
     }
 
     // Process dust lost accounts