Remove linkes to disablet home page from README.md

The link to seed-rs.org is temporally disabled because a third party may have acquired it (see seed-rs/seed-rs.org#126)

Author: akhilman

README.md

@@ -4,7 +4,7 @@
 
 > ### Seed codebase containing real world examples (CRUD, auth, advanced patterns, etc) that adheres to the [RealWorld](https://github.com/gothinkster/realworld) spec and API.
 
-### [Demo](https://realworld.seed-rs.org/)     [RealWorld](https://github.com/gothinkster/realworld)
+### ~~Demo~~     [RealWorld](https://github.com/gothinkster/realworld)
 
 This codebase was created to demonstrate a fully fledged fullstack application built with **Seed** including CRUD operations, authentication, routing, pagination, and more.