Update deprecation notice

CHANGELOG.md

@@ -4,7 +4,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][unreleased]
 
-## Deprecation announcement 2021-08-02
+## Deprecation announcement 2023-02-09
+- Added deprecation notice to the README.
 
 ## [1.1.2] - 2017-08-21
 

README.md

@@ -1,20 +1,20 @@
 # Deprecation Notice
 
-> <b>This repository is deprecated as of 2021-08-02.</b>
+| :warning: This repository is deprecated   |
+| :-----------------------------------------|
+| As of February 2023, this repository is deprecated and will soon be archived. |
 
-# Best practices
-
-We don't recommend using this resource proxy. It is not being maintained and there's been no active development for many years. There are many better solutions.
+We recommend choosing from the following solutions:
 
 * Enable [CORS](http://enable-cors.org/server.html) on the non-CORS enabled web server.
-* Use [API keys](https://web.archive.org/web/20210506231115/https://developers.arcgis.com/documentation/mapping-apis-and-services/security/api-keys/) to use services and access private content. 
+* Use [API keys](https://developers.arcgis.com/documentation/mapping-apis-and-services/security/api-keys/) to use services and access private content. 
 * Configure your security settings in [ArcGIS Online](https://doc.arcgis.com/en/arcgis-online/administer/configure-security.htm) or [ArcGIS Enterprise](https://enterprise.arcgis.com/en/portal/latest/administer/windows/configure-security.htm). 
 * Access secure services [using ArcGIS Online](https://doc.arcgis.com/en/arcgis-online/reference/arcgis-server-services.htm#ESRI_SECTION1_FEB0DF92DA064B6A970DFB59A18AA4C2) to store your username/password credentials. 
 
-**Note:** this resource proxy may only be used with ArcGIS Enterprise.
-
 # Proxy files for DotNet, Java and PHP
 
+**Note:** this resource proxy may only be used with ArcGIS Enterprise.
+
 These proxy files support:
 * Accessing cross domain resources
 * Requests that exceed 2048 characters