Update README.md

README.md

@@ -1,6 +1,8 @@
 # terraform-provider-waapm
 Terraform provider for WALLIX Application-to-Application Password Manager (WAAPM)
 
+## Configuration
+
 The provider configuration should only define the path of the WAAPM executable:
 
 ```terraform
@@ -9,16 +11,16 @@ provider "waapm" {
 }
 ```
 
-In order to retrieve a secret for the bastion and to store it in a variable, define a data source:
+In order to retrieve a secret for the bastion and store it in a variable, define a datasource:
 
 ```terraform
 data "waapm_account" "service_account" {
   account = "[email protected]"
 }
 ```
-The complete list for datasource arguement is the following:
-* account (string): account of the secret using bastion target syntax
-* bastion (string): bastion url to to query
+The complete list for datasource arguments is as follows:
+* account (string): account of the secret using bastion target name syntax. This argument is mandatory.
+* bastion (string): bastion url to request
 * format (string): requested secret format
 * key (string): type of requested secret
 * modules (string): use modules for fingerprint
@@ -28,4 +30,16 @@ The complete list for datasource arguement is the following:
 * directory (string): directory for cred and vault files
 * application (string): name of the application
 
-Only account is mandatory. The secret is return as value.
+Only account is mandatory. The secret is returned as value.
+
+## Installation
+
+Install WAAPM providers by placing the plugin executables in the user plugins directory.
+The user plugins directory is in one of the following locations, depending on the host operating system:
+
+| Operating system  | User plugins directory          |
+|-------------------|---------------------------------|
+|   Windows         | `%APPDATA%\terraform.d\plugins` |
+| All other systems | `~/.terraform.d/plugins`        |
+
+Once a plugin is installed, terraform init can initialize it normally.