Update documentation to change the allowed id token time skew

README.md

@@ -619,7 +619,7 @@ AppAuthConfiguration appAuthConfig = new AppAuthConfiguration.Builder()
 
 ID Token validation was introduced in `0.8.0` but not all authorization servers or configurations support it correctly.
 
-- For testing environments [setSkipIssuerHttpsCheck](https://github.com/openid/AppAuth-Android/blob/master/library/java/net/openid/appauth/AppAuthConfiguration.java#L129) can be used to bypass the fact the issuer needs to be HTTPS.
+- For testing environments [setSkipIssuerHttpsCheck](https://github.com/openid/AppAuth-Android/blob/master/library/java/net/openid/appauth/AppAuthConfiguration.java#L143) can be used to bypass the fact the issuer needs to be HTTPS.
 
 ```java
 AppAuthConfiguration appAuthConfig = new AppAuthConfiguration.Builder()
@@ -635,6 +635,22 @@ AuthorizationRequest authRequest = authRequestBuilder
     .build();
 ```
 
+- To change the default allowed time skew of 10 minutes for the issue time, [setAllowedIssueTimeSkew](https://github.com/openid/AppAuth-Android/blob/master/library/java/net/openid/appauth/AppAuthConfiguration.java#L159) can be used.
+
+```java
+AppAuthConfiguration appAuthConfig = new AppAuthConfiguration.Builder()
+    .setAllowedIssueTimeSkew(THIRTY_MINUTES_IN_SECONDS)
+    .build()
+```
+
+- For testing environments [setSkipIssueTimeValidation](https://github.com/openid/AppAuth-Android/blob/master/library/java/net/openid/appauth/AppAuthConfiguration.java#L151) can be used to bypass the issue time validation.
+
+```java
+AppAuthConfiguration appAuthConfig = new AppAuthConfiguration.Builder()
+    .setSkipIssueTimeValidation(true)
+    .build()
+```
+
 ## Dynamic client registration
 
 AppAuth supports the