add instructions for installing pheonix

README.md

@@ -1,6 +1,6 @@
 ## ur running shoes for running thru citations
 
-### install dev env
+### setup dev env (ubuntu)
 
 install [asdf](https://asdf-vm.com/guide/getting-started.html#_1-install-dependencies)
 
@@ -24,3 +24,11 @@ $ asdf current
 elixir          1.14.3-otp-25   /home/ryan/dev/citerun/.tool-versions
 erlang          25.3            /home/ryan/dev/citerun/.tool-versions
 ```
+
+install [pheonix](https://hexdocs.pm/phoenix/installation.html)
+
+```console
+$ sudo apt-get install inotify-tools # linux only
+$ mix local.hex
+$ mix archive.install hex phx_new
+```