Update some docs

README.md

@@ -1,4 +1,4 @@
-would-reformat - automatic reformatting for emacs without being annoying
+would-reformat - automatic reformatting for emacs (and maybe other editors) without being annoying
 
 # Motivation
 
@@ -38,9 +38,13 @@ saving a file and to run `do-reformat.sh` when you hit `<F1>`.
 - typescript
 - vue
 
-Out of the box, python uses `isort` and `black`, go uses `gofmt`, and dart
-uses `dart format`.  The rest use `prettier`.  Adding new programming
-languages is easy, assuming they have a formatter with a dry run mode.
+Out of the box, for python we use `isort` and `black`, for go we use `gofmt`,
+for dart we use `dart format`, for rust we use `rustfmt`, and for everything
+else we use `prettier`.
+
+Adding suuport for other programming languages is easy, assuming they have a
+formatter with a dry run mode.  And even if they don't it shouldn't be that
+bad.
 
 # Installation