Add README and fix license file

Add README and fix license file

Author: HarshCasper

LICENCE LICENSELICENCE renamed to LICENSE

@@ -0,0 +1,25 @@
+# LocalStack CodePipeline Samples
+
+This repository contains two sample applications that demonstrate [LocalStack's CodePipeline emulation](https://docs.localstack.cloud/aws/services/codepipeline) with CodeBuild, S3, and CodeArtifact workflows.
+
+## Prerequisites
+
+- A valid [LocalStack for AWS license](https://localstack.cloud/pricing), which provides a [`LOCALSTACK_AUTH_TOKEN`](https://docs.localstack.cloud/getting-started/auth-token/) required to run these samples.
+- [Docker](https://docs.docker.com/get-docker/) with access to the Docker socket.
+- [LocalStack CLI](https://docs.localstack.cloud/user-guide/tools/localstack-cli/) (`awslocal`) and AWS CLI.
+- A GitHub Personal Access Token exported as `CODEPIPELINE_GH_TOKEN` (used by both samples to download source archives).
+- `npm` (required for the CodeArtifact publishing sample).
+
+```bash
+export LOCALSTACK_AUTH_TOKEN=<your-auth-token>
+export CODEPIPELINE_GH_TOKEN=<your-github-pat>
+```
+
+## Samples
+
+- [1-codebuild-compile-s3-upload](1-codebuild-compile-s3-upload/README.md): Builds `fzf` with CodeBuild and uploads the resulting binary to S3 through CodePipeline.
+- [2-codebuild-test-codeartifact-publish](2-codebuild-test-codeartifact-publish/README.md): Tests a `lodash` fork and publishes the package to CodeArtifact through CodePipeline.
+
+## License
+
+Licensed under the Apache License 2.0. See [LICENSE](LICENSE).