docs: improve readme

- Adds demo asciiname
- Better indented download script

README.md

@@ -24,6 +24,13 @@ only webpage to watch the game:
   terminal.
 - **Lightweight:** Zero dependencies native binary.
 
+## Demo
+
+*asciinema seems not to handle unicode well, so please blame the slightly broken
+layout on them ;)
+
+[![asciicast](https://asciinema.org/a/661370.svg)](https://asciinema.org/a/661370)
+
 ## Installation
 
 pp is a single native executable and currently available for x86_64 based linux.
@@ -42,7 +49,7 @@ The following lines should have you running the latest version in no time
 curl -s https://api.github.com/repos/sne11ius/pp/releases/latest | \
   jq -r '.assets[] | select(.name == "pp") | .browser_download_url' | \
   xargs curl -L -o pp && \
-  chmod +x ./pp
+chmod +x ./pp
 ```
 
 ### From source
@@ -108,10 +115,6 @@ Use env var `SERVER` or parameter `-s` (or `--server`) to connect a different
 server (default is `https://pp.discordia.network`):
 `SERVER=http://localhost:8080 ./pp`
 
-## Screenshots
-
-***Coming soon...***
-
 ## Contributing
 
 ***Make this a "how to dev" section or link to dedicated doc

client/tui.go

@@ -72,11 +72,14 @@ func (tui *TUI) createHeader() (*tview.Flex, []inputCapturer) {
 
 	copyButton := tview.NewButton("Copy room name")
 	copyButton.SetSelectedFunc(func() {
-		cmd := exec.Command("xclip", "-selection", "c")
-		cmd.Stdin = bytes.NewBufferString(tui.Room.RoomID)
-		err := cmd.Run()
-		if err != nil {
-			panic(err)
+		_, err := exec.LookPath("xclip")
+		if err == nil {
+			cmd := exec.Command("xclip", "-selection", "c")
+			cmd.Stdin = bytes.NewBufferString(tui.Room.RoomID)
+			err := cmd.Run()
+			if err != nil {
+				panic(err)
+			}
 		}
 	})