diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cc9c38f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+## UI scenarios development
+Pro vývoj je potřeba provést tyto kroky:
+- `sbtn ~scenarios-ui/fastLinkJS`
+- `cd ui/scenarios/`
+- `yarn` pokud není nainstalován vite
+- `yarn vite .`
\ No newline at end of file

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..cc9c38f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+## UI scenarios development
+Pro vývoj je potřeba provést tyto kroky:
+- `sbtn ~scenarios-ui/fastLinkJS`
+- `cd ui/scenarios/`
+- `yarn` pokud není nainstalován vite
+- `yarn vite .`
\ No newline at end of file
diff --git a/flake.nix b/flake.nix
index 9b21aef..73dc9d7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,7 +22,7 @@
         };
       in { devShell = with pkgs;
           mkShell {
-            buildInputs = [ jre ammonite coursier bloop sbt scalafmt ];
+            buildInputs = [ jre ammonite coursier bloop sbt scalafmt yarn ];
           };
       });
 }