updating README.md with the new unified launcher information and additional links at the end (#53)

Author: InbarGazit

README.md

@@ -45,7 +45,7 @@ This client has the following external dependencies:
 
 ### Launchers
 
-DocuSign provides a sample application referred to as a [Launcher](https://github.com/docusign/eg-03-ruby-auth-code-grant). The Launcher contains a set of 14 common use cases and associated source files. These examples use  DocuSign's [Authorization Code Grant](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-code-grant) flow.
+DocuSign provides a sample application code referred to as a [Launcher](https://github.com/docusign/code-examples-ruby). The Launcher contains a set of 31 common use cases and associated source files. These examples use either DocuSign's [Authorization Code Grant](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-code-grant) or [JSON Web Tokens (JWT)](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-jsonwebtoken) flows.
 
 ### Proof-of-concept applications
 
@@ -57,10 +57,6 @@ For details regarding which type of OAuth grant will work best for your DocuSign
 
 For security purposes, DocuSign recommends using the [Authorization Code Grant](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-code-grant) flow.
 
-There are other use-case scenarios, such as **single-page applications** (SPA) that use **Cross-Origin Resource Sharing** (CORS), or where there may not be a user to interact with your Service Account. For these use cases, DocuSign also supports [JWT](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-jsonwebtoken) and [Implicit](https://developers.docusign.com/esign-rest-api/guides/authentication/oauth2-implicit) grants. For code examples, see the links below:
-
-- [JWT (JSON Web Token)](https://github.com/docusign/eg-03-ruby-auth-code-grant)
-- Implicit Grant (coming soon)
 
 ## Support
 
@@ -76,3 +72,10 @@ The DocuSign Ruby Client is licensed under the [MIT License](https://github.com/
 [downloads-url]: https://rubygems.org/gems/docusign_esign
 [travis-image]: https://img.shields.io/travis/docusign/docusign-ruby-client.svg?style=flat
 [travis-url]: https://travis-ci.org/docusign/docusign-ruby-client
+
+### Additional Resources
+* [DocuSign Developer Center](https://developers.docusign.com)
+* [DocuSign API on Twitter](https://twitter.com/docusignapi)
+* [DocuSign For Developers on LinkedIn](https://www.linkedin.com/showcase/docusign-for-developers/)
+* [DocuSign For Developers on YouTube](https://www.youtube.com/channel/UCJSJ2kMs_qeQotmw4-lX2NQ)
+