make user agent a public property in PocketReader

PocketSharp/PocketReader.cs

@@ -1,9 +1,9 @@
-using PocketSharp.Ports.NReadability;
+using PocketSharp.Models;
+using PocketSharp.Ports.NReadability;
 using System;
 using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
-using PocketSharp.Models;
 
 namespace PocketSharp
 {
@@ -12,6 +12,12 @@ namespace PocketSharp
   /// </summary>
   public class PocketReader
   {
+    /// <summary>
+    /// Used UserAgent for HTTP request
+    /// </summary>
+    public string userAgent = "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.4 Safari/537.36 OPR/18.0.1284.2";
+
+
     /// <summary>
     /// REST client used for HTML retrieval
     /// </summary>
@@ -36,8 +42,8 @@ namespace PocketSharp
       // add accepted encodings
       _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip,deflate");
 
-      // add user agent (default for Opera with PocketSharp identifier appended)
-      _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.4 Safari/537.36 OPR/18.0.1284.2 PocketSharp/2.2");
+      // add user agent
+      _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", userAgent + " PocketSharp / 3.0");
     }
 
 
@@ -101,7 +107,7 @@ namespace PocketSharp
 
       // process/transcode HTML
       TranscodingResult transcodingResult = transcoder.Transcode(transcodingInput);
-      
+
       return new PocketArticle()
       {
         Content = transcodingResult.ExtractedContent,