Updated instructions to install development version (#258)

* Adds the Chocolatey package as a way to install Qrcp (#249)

Adds the Chocolatey package in the list of possibilities to install the Desktop app.

* update instructions to install development version

Starting Go 1.18, go get no longer builds packages.  go install must be used to
install a module.

---------

Co-authored-by: Xavier Jouvenot <x.jouvenot@gmail.com>

README.md

@@ -44,6 +44,10 @@ _Note: it requires go 1.8_
 
     go get github.com/claudiodangelis/qrcp
 
+If using go 1.18 or higher,
+
+    go install github.com/claudiodangelis/qrcp@latest
+
 ## Linux
 
 Download the latest Linux .tar.gz archive from the [Releases](https://github.com/claudiodangelis/qrcp/releases) page, extract it, move the binary to the proper directory, then set execution permissions.