new API documentation (#16)

Author: charlesdevandiere

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "xmldoc2markdown": {
-      "version": "1.1.0",
+      "version": "2.1.0",
       "commands": [
         "xmldoc2md"
       ]