Split application and library.

BasicBlockChain.Core/Transaction.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace BasicBlockChain.Core
+{
+    public class Transaction
+    {
+        public string Sender { get; set; }
+        public string Receiver { get; set; }
+        public long MicroCoinAmount { get; set; }
+        public DateTime Date { get; set; }
+
+        public Transaction(string sender, string receiver, long microCoinAmount, DateTime date)
+        {
+            Sender = sender;
+            Receiver = receiver;
+            MicroCoinAmount = microCoinAmount;
+            Date = date;
+        }
+    }
+}