docs: Use Eask for contributing

README.md

@@ -77,16 +77,18 @@ and the [tips and
 conventions](https://www.gnu.org/software/emacs/manual/html_node/elisp/Tips.html)
 from the Emacs manual.
 
-You should also check for errors and linter warnings in your code. You can do so in Emacs with flymake or flycheck, but we recommend running the tool `makem.sh` provided with the repository:
+You should also check for errors and linter warnings in your code. You can do so in Emacs with flymake or flycheck, but we recommend running the tool `Eask` provided with the repository:
+
+This assumes you have [Eask](https://github.com/emacs-eask/cli) installed.
 
 ```sh
-./makem.sh lint-compile
+eask compile
 ```
 
 This program will tell you if there is any problem with your code. If there's no output, everything is fine. You can run all tests like so, but note it might give you spelling errors that aren't relevant in this project:
 
 ```sh
-./makem.sh all
+eask lint checkdoc && eask lint package
 ```
 
 ## How to install