Add innstallation instructions for Para

Author: ashald

README.md

@@ -71,10 +71,63 @@ removed from Terraform configuration. Instead `count` meta-parameter should be u
 > Terraform automatically discovers the Providers when it parses configuration files.
 > This only occurs when the init command is executed.
 
-Currently Terraform is able to automatically download only
-[official plugins distributed by HashiCorp](https://github.com/terraform-providers).
+Currently Terraform is able to automatically download only [official plugins distributed by HashiCorp](https://github.com/terraform-providers).
 
-[All other plugins](https://www.terraform.io/docs/providers/type/community-index.html) should be installed manually.
+The provider plugin can be installed automatically via [Para - 3rd-party plugin manager for Terraform](https://github.com/paraterraform/para)
+or it can be downloaded and installed manually.  
+
+### Para
+
+This plugin is available via [default index](https://github.com/paraterraform/index) for [Para](https://github.com/paraterraform/para).
+If you use Para or Para Launcher you can just skip to the [Usage](#usage) section below assuming you'd wrap all calls to Terraform with Para:
+```bash
+$ ./para terraform init
+Para Launcher Activated!
+- Checking para.cfg.yaml in current directory for 'version: X.Y.Z'
+- Desired version: latest (latest is used when no version specified)
+- Executing '$TMPDIR/para-501/para/latest/para_v0.3.1_darwin-amd64'
+
+------------------------------------------------------------------------
+
+Para is being initialized...
+- Cache Dir: $TMPDIR/para-501
+- Terraform: downloading to $TMPDIR/para-501/terraform/0.12.2/darwin_amd64
+- Plugin Dir: terraform.d/plugins
+- Primary Index: https://raw.githubusercontent.com/paraterraform/index/master/para.idx.yaml as of 2019-06-22T00:59:24-04:00 (providers: 16)
+- Index Extensions: para.idx.d (0/0), ~/.para/para.idx.d (0/0), /etc/para/para.idx.d (0/0)
+- Command: terraform init
+
+------------------------------------------------------------------------
+
+
+Initializing the backend...
+
+Initializing provider plugins...
+- Para provides 3rd-party Terraform provider plugin 'stateful' version 'v1.1.0' for 'darwin_amd64' (downloading)
+
+
+The following providers do not have any version constraints in configuration,
+so the latest version was installed.
+
+To prevent automatic upgrades to new major versions that may contain breaking
+changes, it is recommended to add version = "..." constraints to the
+corresponding provider blocks in configuration, with the constraint strings
+suggested below.
+
+* provider.stateful: version = "~> 1.1"
+
+Terraform has been successfully initialized!
+```  
+
+If you use Para but don't use the [default index](https://github.com/paraterraform/index) you can make the plugin available
+by including index extension for this plugin: either add [`provider.stateful.yaml`](./provider.stateful.yaml) from this
+repo to your [Para index extensions dir](https://github.com/paraterraform/para#extensions) to fix currently available versions
+or create `provider.stateful.yaml` as an empty file and put the URL to the aforementioned file inside to automatically get updates:
+```yaml
+https://raw.githubusercontent.com/ashald/terraform-provider-stateful/master/go.mod
+```
+
+### Manual
 
 > Terraform will search for matching Providers via a
 > [Discovery](https://www.terraform.io/docs/extend/how-terraform-works.html#discovery) process, **including the current

provider.stateful.yaml

@@ -0,0 +1,18 @@
+v1.1.0:
+  darwin_amd64:
+    url: https://github.com/ashald/terraform-provider-stateful/releases/download/v1.1.0/terraform-provider-stateful_v1.1.0-darwin-amd64.zip
+    size: 27599364
+    digest: sha256:d773f5aec17078b2d57eddc5b0d61feaea6fe122ee1008a3ef3876286494ec68
+  linux_amd64:
+    url: https://github.com/ashald/terraform-provider-stateful/releases/download/v1.1.0/terraform-provider-stateful_v1.1.0-linux-amd64.zip
+    size: 27833249
+    digest: sha256:79a8b843079e97d31dfc6119365b1c0cc765f7a03ece873e5b971bb4361a82e6
+v1.0.0:
+  darwin_amd64:
+    url: https://github.com/ashald/terraform-provider-stateful/releases/download/v1.0.0/terraform-provider-stateful_v1.0.0-darwin-amd64.zip
+    size: 28276500
+    digest: sha256:9558ab0736d31506d731336968d10c6061b00ff394162eba772710133d077cf4
+  linux_amd64:
+    url: https://github.com/ashald/terraform-provider-stateful/releases/download/v1.0.0/terraform-provider-stateful_v1.0.0-linux-amd64.zip
+    size: 28389643
+    digest: sha256:1a7fe649f0f9b5a9f17a6914dd81b36256adba16008121db526480bff86d3c69