docs: studio-v2 install command

.gitignore

@@ -10,3 +10,5 @@ compiled
 .awcache
 .rpt2_cache
 docs
+*.iml
+lib

.releaserc.json

@@ -1,4 +1,4 @@
 {
   "extends": "@sanity/semantic-release-preset",
-  "branches": ["master"]
+  "branches": ["main", { "name": "studio-v2", "channel": "studio-v2", "range": "0.x.x" }]
 }

README.md

@@ -1,11 +1,12 @@
 # Sanity Asset Source Plugin: Unsplash
-Search for photos on Unsplash and add them to your project right inside Sanity Studio.
-
+> This is a **Sanity Studio v2** plugin.
+> For the v3 version, please refer to the [v3-branch](https://github.com/sanity-io/sanity-plugin-asset-source-unsplash).
 
+Search for photos on Unsplash and add them to your project right inside Sanity Studio.
 
 ## Installation
 
-`sanity install asset-source-unsplash`
+`sanity install asset-source-unsplash@studio-v2`
 
 ## Part name