docs: embedded viewer and roadmap updates (readme and docs)

docs/latest/SUMMARY.md

@@ -46,4 +46,5 @@
 
 - [Contributing](contributing.md)
 - [FAQ](frequently-asked-questions.md)
+- [Roadmap](roadmap.md)
 - [Help](help.md)

docs/latest/roadmap.md

@@ -0,0 +1,25 @@
+# Roadmap
+
+If you want to know what's planned for the very near future,
+[check out our roadmap](https://ohif.canny.io/). The best way to influence when
+and what is worked on is to contribute to the conversation by creating GitHub
+issues, and contributing code through pull requests. OHIF's high level
+priorities for the near future are:
+
+- Feature parity with version 1
+- Extension and configuration improvements with key integration partners
+- Continued Developer Experience Improvements
+- Segmentation Tools, and improved VTK.js support
+
+More granular information will make it's way to the backlog as these items
+become scoped for development by core maintainers.
+
+> Don't hesitate to ask questions, propose features, or create pull requests.
+> We're here, we're listening, and we're ready to build the best open source
+> medical imaging viewer on the web.
+
+### Roadmap Generously Powered by Canny.io
+
+<a href="https://ohif.canny.io/">
+  <img height="30" src="assets/img/canny-full.png" />
+</a>