From 4f552188734c08634a32fb5ac22f0c7a749000d2 Mon Sep 17 00:00:00 2001
From: CHIKAMATSU Naohiro <n.chika156@gmail.com>
Date: Mon, 1 Jan 2024 15:08:24 +0900
Subject: [PATCH 1/2] Add specification document for cfn command. Not
 implemented yet.

---
 doc/cfn/README.md | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 doc/cfn/README.md

diff --git a/doc/cfn/README.md b/doc/cfn/README.md
new file mode 100644
index 0000000..0906fed
--- /dev/null
+++ b/doc/cfn/README.md
@@ -0,0 +1,38 @@
+## cfn - list up or delete CloudFormation stacks
+> [!IMPORTANT]
+> Not implemented yet. This is specifiction document.
+
+The cfn command provides the following features:
+- [ ] List stacks
+- [ ] Delete stacks
+- [ ] Add tags to stacks
+- [ ] Interactive mode
+
+### How to install
+```shell
+go install github.com/nao1215/rainbow/cmd/cfn@latest
+```
+
+### How to use
+The cfn command allows you to specify a profile as an option, but it is more user-friendly to use the `AWS_PROFILE` environment variable.
+
+### List stacks
+```shell
+cfn ls
+```
+
+### Delete stacks
+```shell
+cfn rm ${STACK_NAME}
+```
+
+### Add tags to stacks
+```shell
+cfn tag ${STACK_NAME} ${TAG_KEY}=${TAG_VALUE}
+```
+
+### Interactive mode
+```shell
+cfn
+```
+

From 1e517a46bf926988b6a2ae3450a039feb03415cf Mon Sep 17 00:00:00 2001
From: CHIKAMATSU Naohiro <n.chika156@gmail.com>
Date: Mon, 1 Jan 2024 15:10:27 +0900
Subject: [PATCH 2/2] Update

---
 CHANGELOG.md | 5 ++++-
 README.md    | 5 +++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f091b40..84469f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
-## [](https://github.com/nao1215/rainbow/compare/77bdf974281a...) (2023-12-29)
+## [](https://github.com/nao1215/rainbow/compare/77bdf974281a...) (2024-01-01)
 
+* Introduce spare command [#13](https://github.com/nao1215/rainbow/pull/13) ([nao1215](https://github.com/nao1215))
+* build(deps): bump golang.org/x/sync from 0.1.0 to 0.5.0 [#12](https://github.com/nao1215/rainbow/pull/12) ([dependabot[bot]](https://github.com/apps/dependabot))
+* Update document for s3hub with gif image [#11](https://github.com/nao1215/rainbow/pull/11) ([nao1215](https://github.com/nao1215))
 * Add remove subcommand [#10](https://github.com/nao1215/rainbow/pull/10) ([nao1215](https://github.com/nao1215))
 * Add ls subcommand [#9](https://github.com/nao1215/rainbow/pull/9) ([nao1215](https://github.com/nao1215))
 * Add s3hub mb subcommand [#8](https://github.com/nao1215/rainbow/pull/8) ([nao1215](https://github.com/nao1215))
diff --git a/README.md b/README.md
index 81fe00d..06b64cf 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,9 @@ The rainbow project is a toolset for managing AWS resources. This project consis
 [WIP]
 |Name|README|implementation|Description|
 |:--|:--|:--|:--|
-|[s3hub](./doc/s3hub/README.md)|✅||User-friendly s3 management tool|
-|[spare](./doc/spare/README.md)|✅||Single Page Application Release Easily|
+|[s3hub](./doc/s3hub/README.md)|✅|60%|User-friendly s3 management tool|
+|[spare](./doc/spare/README.md)|✅|50%|Single Page Application Release Easily|
+|[cfn](./doc/cfn/README.md)|✅|0%|List up or delete CloudFormation stacks|
 
 ### s3hub example
 #### Create a bucket(s)