Update package release notes

Author: Krusen

BencodeNET/project.json

@@ -6,7 +6,7 @@
   "description": "A library for encoding and decoding bencode (e.g. torrent files)",
   "packOptions": {
     //"summary": "A library for encoding and decoding bencode (e.g. torrent files)",
-    "releaseNotes": "",
+    "releaseNotes": "Most of the API has been rewritten for v2.0. Please see https://github.com/Krusen/BencodeNET for examples.",
     "projectUrl": "https://github.com/Krusen/BencodeNET",
     "licenseUrl": "https://github.com/Krusen/BencodeNET/blob/master/LICENSE.md",
     "requireLicenseAcceptance": false,