add parameter parsing to airtime-liquidsoap script.

-Allow us to prevent running as daemon

python_apps/pypo/airtime-liquidsoap

@@ -1,11 +1,38 @@
 #!/bin/bash -e
 
+debug="f"
+
+showhelp () {
+    echo "Usage: airtime-liquidsoap [options]
+--help|-h                         Displays usage information.
+--debug|-d                        Print error messages to console" 
+}
+
+set -- $(getopt -l help,debug "hd" "$@")
+while [ $# -gt 0 ]
+do
+    case "$1" in
+    (-h|--help) showhelp; exit 0;;
+    (-d|--debug) debug="t";;
+    
+    (--) shift; break;;
+    (-*) echo "$0: error - unrecognized option $1" 1>&2; exit 1;;
+    (*)  break;;
+    esac
+    shift
+done
+
+
 virtualenv_bin="/usr/lib/airtime/airtime_virtualenv/bin/"
 . ${virtualenv_bin}activate
 
 export HOME="/var/tmp/airtime/pypo/"
 api_client_path="/usr/lib/airtime/"
-ls_path="/usr/bin/airtime-liquidsoap --verbose -f -d"
+if [ $debug = "t" ]; then
+    ls_path="/usr/bin/airtime-liquidsoap --verbose -f"
+else
+    ls_path="/usr/bin/airtime-liquidsoap --verbose -f -d"
+fi
 ls_param="/usr/lib/airtime/pypo/bin/liquidsoap_scripts/ls_script.liq"
 
 export PYTHONPATH=${api_client_path}