Update README.md (#423)

Author: 1ilit

README.md

@@ -48,4 +48,4 @@ docker build -t drawdb .
 docker run -p 3000:80 drawdb
 ```
 
-Set up the [server](https://github.com/drawdb-io/drawdb-server) and environment variables according to `.env.sample` for the survey and bug report forms.
+If you wish to work with sharing, set up [server](https://github.com/drawdb-io/drawdb-server) and environment variables according to `.env.sample`. This is not required unless you want to share files.