Merge pull request #421 from butonic/add-public-upload-flow-docs

Add public upload flow to docs

docs/public-upload-flow.md

@@ -0,0 +1,14 @@
+---
+title: "Public upload Flow"
+date: 2020-07-27T14:16:00+01:00
+weight: 47
+geekdocRepo: https://github.com/owncloud/ocis
+geekdocEditPath: edit/master/docs
+geekdocFilePath: public-upload-flow.md
+---
+
+
+## Public Upload flow
+
+The following diagram describes the flow of requests:
+