docs: update README

README.md

@@ -4,7 +4,7 @@
 
 ## How to use
 
-[Example](aqua.yaml)
+[Example](https://github.com/suzuki-shunsuke/my-aqua-config/blob/main/aqua.yaml)
 
 aqua.yaml
 
@@ -14,6 +14,35 @@ registries:
   ref: v0.3.0 # renovate: depName=suzuki-shunsuke/aqua-registry
 ```
 
+## Search packages from the Standard Registry by the command `aqua g`
+
+Please add the Standard Registry to your aqua.yaml's registries, and run `aqua g`.
+
+```yaml
+registries:
+- type: standard
+  ref: v0.3.0 # renovate: depName=suzuki-shunsuke/aqua-registry
+```
+
+`aqua g` launches the interactive UI and you can search the package by fuzzy search.
+
+```
+  direnv (standard)
+  consul (standard)
+  conftest (standard)
+> golangci-lint (standard)
+  47/47
+>
+```
+
+## Request for new packages
+
+Please check [registry.yaml](https://github.com/suzuki-shunsuke/aqua-registry/blob/main/registry.yaml) or search packages by `aqua g` command.
+If the packages you want aren't found, please create issues or send pull requests!
+
+By adding various packages to the standard registry, aqua becomes more useful and attractive.
+We need your contribution!
+
 ## How to contribute
 
 Please see [CONTRIBUTING.md](CONTRIBUTING.md)