README: update

Signed-off-by: Felipe Contreras <[email protected]>

Author: felipec

README.md

@@ -1 +1,8 @@
-This is a barebones version of [Engineering-Solver](https://github.com/dvd101x/Engineering-Solver).
+Very simple [math.js](https://mathjs.org/) editor using [CodeJar](https://medv.io/codejar/) and
+[highlight.js](https://highlightjs.org/).
+
+
+You can try it online at https://felipec.github.io/math-notepad/.
+
+This is a simplified version of [Engineering-Solver](https://github.com/dvd101x/Engineering-Solver)
+plus syntax highlighting.