File Uploads and Batch Queries (#44)

* Added documentation for the multipart request extension targeting file uploads and batch queries

Author: kevin-carroll

docs/reference/_category_.json

@@ -1,5 +1,5 @@
 {
   "label": "References",
-  "position": 8,
+  "position": 9,
   "collapsed": false
 }

docs/reference/demo-projects.md

@@ -37,3 +37,11 @@ Demonstrates the use of an external subscription event publisher and a consumer
 
 📌  [Subscriptions w/ React & Apollo Client](https://github.com/graphql-aspnet/demo-projects/tree/master/Subscriptions-ReactApolloClient)<br/>
 A sample react application that makes use of the [apollo client](https://www.apollographql.com/docs/react/) to connect to a GraphQL ASP.NET server.
+
+<br/>
+
+### Extensions
+
+📌  [File Uploads](https://github.com/graphql-aspnet/demo-projects/tree/master/File-Uploads)<br/>
+Demonstrates the use the [graphql-multipart-form-spec](https://github.com/jaydenseric/graphql-multipart-request-spec) compliant extension to perform file uploads as part of a graphql query. 
+

docs/server-extensions/_category_.json

@@ -0,0 +1,5 @@
+{
+  "label": "Extensions",
+  "position": 8,
+  "collapsed": false
+}