add bash completion support

pulseaudio-tcp.bash_completion

@@ -0,0 +1,22 @@
+_pulseaudio_tcp_completions() {
+  local cur options commands delete
+
+  cur=${COMP_WORDS[COMP_CWORD]}
+  options=( "--debug" "--help" "--nogui" )
+  commands=( "start" "stop" "status" "setup" "restart" )
+
+  for delete in "${COMP_WORDS[@]::${#COMP_WORDS[@]}-1}" ; do
+    options=("${options[@]/$delete}")
+    commands=("${commands[@]/$delete}")
+  done
+
+  COMPREPLY=()
+
+  case "$cur" in
+    '') mapfile -t COMPREPLY < <(compgen -W "${options[*]} ${commands[*]}"  -- "$cur") ;;
+    -*) mapfile -t COMPREPLY < <(compgen -W "${options[*]}" -- "$cur") ;;
+    [^-]*) mapfile -t COMPREPLY < <(compgen -W "${commands[*]}" -- "$cur") ;;
+  esac
+
+  return 0
+} && complete -F _pulseaudio_tcp_completions pulseaudio-tcp