Integrate our new Runner into CLI

lib/uh/wm/cli.rb

@@ -32,9 +32,7 @@ module Uh
       end
 
       def run
-        @display = Display.new
-        @display.open
-        @env.log "Connected to X server on `#{@display}'"
+        Runner.run env
       end
 
 

spec/uh/wm/cli_spec.rb

@@ -63,19 +63,10 @@ module Uh
       end
 
       describe '#run' do
-        let(:display) { instance_spy Display }
-
-        before { allow(Display).to receive(:new) { display } }
-
-        it 'opens a new X display' do
-          expect(display).to receive :open
+        it 'runs a runner with the env' do
+          expect(Runner).to receive(:run).with(cli.env)
           cli.run
         end
-
-        it 'prints a message on standard output when connected' do
-          cli.run
-          expect(stdout.string).to match /connected/i
-        end
       end
 
       describe '#parse_arguments!' do