Add README.md

Author: nimrodkor

README.md

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+[![Maintained by Bridgecrew.io](https://img.shields.io/badge/maintained%20by-bridgecrew.io-blueviolet)](https://bridge.dev/2WBms5Q)
+[![slack-community](https://slack.bridgecrew.io/badge.svg)](https://slack.bridgecrew.io/?utm_source=github&utm_medium=organic_oss&utm_campaign=checkov-action)
+
+# Yor GitHub action
+
+This GitHub Action runs [Yor](https://github.com/bridgecrewio/yor) against an Infrastructure-as-Code repository.
+Yor applies tags to your infrastructure allowing easier governance, ownership and visibility.
+
+## Example usage
+
+### Simple Example
+```yaml
+jobs:
+  yor-job:
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+      - name: Run yor action
+        uses: bridgecrewio/yor-action@master
+      - name: Commit tag changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+```
+
+Note that this example uses the latest version (`master`).
+
+### Complex Examples
+#### Using tag + tag_groups Parameters
+```yaml
+jobs:
+  yor-job:
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+      - name: Run yor action
+        uses: bridgecrewio/yor-action@master
+        with:
+          directory: path/to/iac
+          skip_directory: test
+          log_level: DEBUG
+          tag: git_modifiers,git_commit,git_repository,yor_trace
+          tag_groups: git,code2cloud
+          custom_tags: path/to/plugin.so
+          output_format: json
+      - name: Commit tag changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+```
+
+#### Using skip_tags + tag_groups Parameters
+```yaml
+jobs:
+  yor-job:
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+      - name: Run yor action
+        uses: bridgecrewio/yor-action@master
+        with:
+          directory: path/to/iac
+          skip_directory: test
+          log_level: DEBUG
+          skip_tags: git_modifiers,git_commit,git_repository
+          tag_groups: git
+          custom_tags: path/to/plugin.so
+          output_format: json
+      - name: Commit tag changes
+        uses: stefanzweifel/git-auto-commit-action@v4
+```