modify route53 documentation with the aws credentials configuration
@@ -7,7 +7,13 @@ jsId: ROUTE53
## Configuration
-In your providers config json file you must provide an aws access key:
+By default, you can configure aws setting like the [go sdk configuration](https://docs.aws.amazon.com/sdk-for-go/v1/developer-guide/configuring-sdk.html). For example you can use environment variables:
+```
+$ export AWS_ACCESS_KEY_ID=XXXXXXXXX
+$ export AWS_SECRET_ACCESS_KEY=YYYYYYYYY
+```
+
+It is also possible to specify an aws access key in the providers config json file:
{% highlight json %}
{
@@ -37,7 +43,7 @@ D("example.tld", REG_NAMECOM, DnsProvider(R53),
## Activation
-DNSControl depends on a standard [aws access key](https://aws.amazon.com/developers/access-keys/) with permission to create and update hosted zones.
+DNSControl depends on a standard [aws access key](https://aws.amazon.com/developers/access-keys/) with permission to list, create and update hosted zones.
## New domains
