README: update

Author: dawidd6

README.md

@@ -8,7 +8,13 @@ Runs on `ubuntu` and `macos`.
 
 One should use the [Personal Access Token](https://github.com/settings/tokens/new?scopes=public_repo) for `token` input to this Action, not the default `GITHUB_TOKEN`, because `brew bump-formula-pr` creates a fork of the formula's tap repository (if needed) and then creates a pull request.
 
-It is best to use this Action when a new tag is pushed:
+> There are two ways to use this Action.
+
+### Standard
+
+Use if you want to simply bump the formula, when a new release happens.
+
+Listen for new tags in workflow:
 
 ```yaml
 on:
@@ -17,22 +23,46 @@ on:
       - '*'
 ```
 
-because then, the script will extract all needed informations by itself, you just need to specify the following step in your workflow:
+The Action will extract all needed informations by itself, you just need to specify the following step in your workflow:
 
 ```yaml
 - name: Update Homebrew formula
-  uses: dawidd6/action-homebrew-bump-formula@v2
+  uses: dawidd6/action-homebrew-bump-formula@v3
   with:
     # Github token, required, not the default one
     token: ${{secrets.TOKEN}}
     # Optional, defaults to homebrew/core
-    tap: dawidd6/tap
+    tap: REPO/NAME
     # Formula name, generally required
     formula: FORMULA
     # Optional, will be determined automatically
     tag: ${{github.ref}}
     # Optional, will be determined automatically
     revision: ${{github.sha}}
     # Optional, if don't want to check for already open PRs
-    force: true
+    force: false # true
 ```
+
+### Livecheck
+
+If `livecheck` input is set to `true`, the Action will run `brew livecheck` to check if formula is outdated or if tap contains outdated formulae and then will run `brew bump-formula-pr` on those formulae with proper arguments to bump them.
+
+Might be a good idea to run this on schedule.
+
+If there are no outdated formulae, the Action will just exit.
+
+```yaml
+- name: Update Homebrew formula
+  uses: dawidd6/action-homebrew-bump-formula@v3
+  with:
+    # Github token, required, not the default one
+    token: ${{secrets.TOKEN}}
+    # Bump all outdated formulae in this tap
+    tap: dawidd6/tap
+    # Bump only this formula if outdated
+    formula: FORMULA
+    # Optional, if don't want to check for already open PRs
+    force: false # true
+    # Need to set this input if wants to use `brew livecheck`
+    livecheck: true
+```