Remove required in provider schema (#27)

Author: antoineverin

provider/provider.go

@@ -14,14 +14,14 @@ func Provider() *schema.Provider {
 		Schema: map[string]*schema.Schema{
 			"url": {
 				Type:        schema.TypeString,
-				Required:    true,
+				Optional:    true,
 				DefaultFunc: schema.EnvDefaultFunc("ELASTICSEARCH_ENDPOINT", nil),
 				Description: "The URL for the Elasticsearch instance.",
 			},
 			"token": {
 				Type:        schema.TypeString,
-				Required:    true,
 				Sensitive:   true,
+				Optional:    true,
 				DefaultFunc: schema.EnvDefaultFunc("ELASTICSEARCH_API_KEY", nil),
 				Description: "The token for API authentication.",
 			},

website/docs/index.html.markdown

@@ -39,6 +39,6 @@ export ELASTICSEARCH_API_KEY=token
 
 The following arguments are supported:
 
-* `url` - (Required) Url to the ElasticSsearch API
-* `token` - (Required) Authentication token to the ElasticSearch API
+* `url` - (Option) Url to the Elasticsearch API. Default is `ELASTICSEARCH_ENDPOINT` environment variable.
+* `token` - (Option) Authentication token to the ElasticSearch API. Default is `ELASTICSEARCH_API_KEY` environment variable.
 * `insecure` - (Optional) Skip server certification verification