Add links to knowledge sharing sessions

README.md

@@ -181,6 +181,11 @@ jest.mock('fhir-package-loader', () => {
 
 # For Developers
 
+## Intro to FHIR Package Loader
+
+To learn more about FHIR Package Loader, watch the Knowledge Sharing Sessions for [Developing FSH Tools](https://vimeo.com/990594107/c35c3f5e43) (view the slides [here](https://confluence.hl7.org/display/FHIR/FSH+Knowledge+Sharing+Sessions?preview=/256509612/256514908/KSS%203%20-%20Developing%20FSH%20Tools.pdf)) and [Developing FHIR Package Loader](https://vimeo.com/1008502493/76aba15913) (view the slides [here](https://confluence.hl7.org/display/FHIR/FSH+Knowledge+Sharing+Sessions?preview=/256509612/265096146/KSS%208%20-%20Developing%20FHIR%20Package%20Loader.pdf)).
+These sessions provide a technical overview of the codebase and summarize key concepts for developers.
+
 ## Installation
 
 FHIR Package Loader is a [TypeScript](https://www.typescriptlang.org/) project. At a minimum, it requires [Node.js](https://nodejs.org/) to build, test, and run the CLI. Developers should install Node.js 18, although other current LTS versions are also expected to work.