Instructions for getting a new syntax working

Author: cmyr

README.md

@@ -1,3 +1,9 @@
 # syntect resources
 
-This repo contains default language definitions and other resources used by various components of the xi-editor project.
+This repo contains default language definitions and other resources used by various components of the xi-editor project.
+
+To get a new syntax definition working in xi:
+- add the syntax to this repository
+- update the submodule in the xi-syntect plugin
+- run `make assets` in the xi-syntect plugin
+- build the plugin and/or commit and PR the new manifest and submodule.