docs(readme): Deprecate

README.md

@@ -1,39 +1,5 @@
-Terraform Provider for Outscale (unofficial)
+[DEPRECATED] Terraform Provider for Outscale (unofficial)
 ==================
 
-
-Requirements
-------------
-
-- [Terraform](https://www.terraform.io/downloads) 0.15.5
-- [Go](https://go.dev/doc/install) 1.17 at least (to build the provider plugin)
-
-Build and Install
----------------------
-
-Compile the binary and install it:
-```bash
-go get -v
-go install
-mkdir -p ~/.terraform.d/plugins/linux_amd64
-cp $GOPATH/bin/terraform-provider-osc ~/.terraform.d/plugins/linux_amd64
-```
-
-Build with Docker (not tested)
----------------------
-
-Build the Docker image
-
-```bash
-$ make docker-image
-```
-
-Build the binaries, you'll find all the binaries in pkg/
-
-```bash
-$ make docker-build
-```
-
-## Release a New Version
-
-Instructions on this [Notion page](https://www.notion.so/scalingooriginal/New-Terraform-Provider-Release-40cd0af66b1f48148fb641ea138a22e5).
+/!\ This Terraform provider is not maintained anymore.
+Please use the official [Terraform provider of Outscale](https://github.com/outscale/terraform-provider-outscale).