doc: update

README → README.md

@@ -1,3 +1,10 @@
+[![JCS-ELPA](https://raw.githubusercontent.com/jcs-emacs/badges/master/elpa/v/javap-mode.svg)](https://jcs-emacs.github.io/jcs-elpa/#/javap-mode)
+
+# javap-mode
+> Javap major mode
+
+[![CI](https://github.com/elp-revive/javap-mode/actions/workflows/test.yml/badge.svg)](https://github.com/elp-revive/javap-mode/actions/workflows/test.yml)
+
 load the mode, it hooks file loading, so when you load a .class file you get the javap output. syntax hilighting of the javap output is a work in progress.
 
 better hilighting would be nice, also some way to step though varying levels of verbosity of javap output