basic help doc

reporting/timer

@@ -1,5 +1,18 @@
 #!/bin/bash
 
+function helpexit() {
+    echo "Simple Timer."
+    echo '$PREFIX is printed before the time'
+    echo '$POSTFIX is printed after the time'
+    exit
+}
+
+
+for (( i=1; i<=$#; i++ )); do
+  [[ "${!i}" = "--help" ]] && helpexit
+  [[ "${!i}" = "-h" ]] && helpexit
+done
+
 function displaytime {
   local T=$1
   local D=$((T/60/60/24))