Merge pull request #177 from fearghasmr/README-wrong-link

postgres link should link to postgres not sqlite

README.md

@@ -104,7 +104,7 @@ Now go to http://localhost:4444. It automatically proxies to localhost, both if
 #### Requirements
 - [Rust](https://www.rust-lang.org/)
 - [Yarn](https://yarnpkg.com/en/)
-- [Postgres](https://www.sqlite.org/index.html)
+- [Postgres](https://www.postgresql.org/)
 #### Set up Postgres DB
 ```
  psql -c "create user rrr with password 'rrr' superuser;" -U postgres