Added support for PDFs and Images

PWAPPv2/Source/DataObjects/PWPdf.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PWAPPv2.Source.DataObjects
+{
+    public class PWPdf
+    {
+        public string path;
+
+
+        public PWPdf(string path)
+        {
+            this.path = path;
+        }
+
+        public string GetBase64String()
+        {
+            byte[] bytes = File.ReadAllBytes(path);
+            return Convert.ToBase64String(bytes);
+        }
+
+        public string ShortFileName()
+        {
+            return path.Substring(path.LastIndexOf("\\") + 1);
+        }
+    }
+}