Update code snippet repo links, add curl

Author: lornajane

README.md

@@ -1,7 +1,7 @@
 # Nexmo Quickstart Examples for Java
 
-Quickstarts also available for: [.NET](https://github.com/nexmo-community/nexmo-dotnet-quickstart), [Node.js](https://github.com/nexmo-community/nexmo-node-quickstart), [PHP](https://github.com/nexmo-community/nexmo-php-quickstart), [Python](https://github.com/nexmo-community/nexmo-python-quickstart), [Ruby](https://github.com/nexmo-community/nexmo-ruby-quickstart)
-  
+Quickstarts also available for: [Python](https://github.com/Nexmo/nexmo-python-code-snippets), [.NET](https://github.com/Nexmo/nexmo-dotnet-code-snippets), [Node.js](https://github.com/Nexmo/nexmo-node-code-snippets), [PHP](https://github.com/Nexmo/nexmo-php-code-snippets),  [Ruby](https://github.com/Nexmo/nexmo-ruby-code-snippets) and [curl](https://github.com/Nexmo/nexmo-curl-code-snippets).
+
 The purpose of the quickstart guide is to provide simple examples focused on
 one goal. For example, sending an SMS, handling an incoming SMS webhook,
 making a Text to Speech call.