clarify getting started for dbt vs xdb (#678)

* clarify getting started for dbt vs xdb

* fix link

* add emoji and XDB intro clause

* Update README.md

Co-authored-by: Sung Won Chung <sungwonchung3@gmail.com>

* Update README.md

Co-authored-by: Sung Won Chung <sungwonchung3@gmail.com>

---------

Co-authored-by: Sung Won Chung <sungwonchung3@gmail.com>

Author: leoebfolsom

README.md

@@ -71,7 +71,11 @@ More information about the algorithm and performance considerations can be found
 
 # Get started
 
-Install `data-diff` with specific database adapters, e.g.:
+## Validating dbt model changes between dev and prod
+⚡ Looking to use `data-diff` in dbt development? Head over to [our `data-diff` + `dbt` documentation](https://docs.datafold.com/development_testing/open_source/) to get started!
+
+## Compare data tables between databases
+🔀 To compare data between databases, install `data-diff` with specific database adapters, e.g.:
 
 ```
 pip install data-diff 'data-diff[postgresql,snowflake]' -U