Add notes about auto installation (terraform-linters#123)

Author: wata727

README.md

@@ -14,11 +14,13 @@ This ruleset focus on possible errors and best practices about AWS resources. Ma
 
 ## Installation
 
-Download the plugin and place it in `~/.tflint.d/plugins/tflint-ruleset-aws` (or `./.tflint.d/plugins/tflint-ruleset-aws`). You can also set another plugin location with the `TFLINT_PLUGIN_DIR` environment variable. When using the plugin, configure as follows in `.tflint.hcl`:
+You can install the plugin by adding a config to `.tflint.hcl` and running `tflint --init`:
 
 ```hcl
 plugin "aws" {
     enabled = true
+    version = "0.4.1"
+    source  = "github.com/terraform-linters/tflint-ruleset-aws"
 }
 ```
 
@@ -63,6 +65,14 @@ You can easily install the built plugin with the following:
 $ make install
 ```
 
+Note that if you install the plugin with `make install`, you must omit the `version` and `source` attributes in` .tflint.hcl`:
+
+```hcl
+plugin "aws" {
+    enabled = true
+}
+```
+
 ## Add a new rule
 
 If you are interested in adding a new rule to this ruleset, you can use the generator. Run the following command:

docs/configuration.md

@@ -6,7 +6,7 @@ Here's an example:
 
 ```hcl
 plugin "aws" {
-    enabled = true
+    // Plugin common attributes
 
     deep_check = false
     access_key = "AWS_ACCESS_KEY_ID"
@@ -17,12 +17,6 @@ plugin "aws" {
 }
 ```
 
-## `enabled`
-
-Default: false
-
-Enable this plugin. This is the common option in all plugins.
-
 ## `deep_check`
 
 Default: false