Write how to test via guard

Author: mtsmfm

README.md

@@ -56,10 +56,18 @@ https://docs.docker.com/engine/installation
 
 ### Run test
 
+You can run test via m:
+
     $ docker-compose run app bin/m
     $ docker-compose run ruby-2-3 bin/m
     $ docker-compose run ruby-2-2 bin/m
 
+Or run via guard:
+
+    $ docker-compose run app bin/guard
+    $ docker-compose run ruby-2-3 bin/guard
+    $ docker-compose run ruby-2-2 bin/guard
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/mtsmfm/language_server-ruby. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.

docker-compose.yml

@@ -1,5 +1,3 @@
-# Continuous testing using guard:
-# docker-compose run -v $PWD:/tmp/src -w /tmp/src app bash -c 'bundle && guard'
 version: '3.0'
 services:
   app: &app