Add 10s timeout for Kernel Download. (#84)

* customize.sh: Add 10s timeout for Kernel Download.
some users complaining about broken volume keys.
so here we added 10s timeout for pressing vol-up or vol-down.
if time runs out and no input from users, script will download the kernel anyway.

* customize.sh: fixing syntax

customize.sh

@@ -84,15 +84,24 @@ ui_print "- Make sure you have a good internet connection."
 ui_print "- [ Vol UP(+): Yes ]"
 ui_print "- [ Vol DOWN(-): No ]"
 
+START_TIME=$(date +%s)
 while true ; do
-  getevent -lc 1 2>&1 | grep KEY_VOLUME > $TMPDIR/events
-  if $(cat $TMPDIR/events | grep -q KEY_VOLUMEUP) ; then
-    ui_print "- It will take a while...."
+  NOW_TIME=$(date +%s)
+  timeout 1 getevent -lc 1 2>&1 | grep KEY_VOLUME > "$TMPDIR/events"
+  if [ $(( NOW_TIME - START_TIME )) -gt 9 ] ; then
+    ui_print "- No input detected after 10 seconds"
+    ui_print "- Downloading Kernel Anyway...."
     /data/adb/box/scripts/box.tool all
     break
-  elif $(cat $TMPDIR/events | grep -q KEY_VOLUMEDOWN) ; then
-    ui_print "- Skip download Kernel and Geox"
-    break
+  else
+    if $(cat $TMPDIR/events | grep -q KEY_VOLUMEUP) ; then
+      ui_print "- It will take a while...."
+      /data/adb/box/scripts/box.tool all
+      break
+    elif $(cat $TMPDIR/events | grep -q KEY_VOLUMEDOWN) ; then
+      ui_print "- Skip download Kernel and Geox"
+      break
+    fi
   fi
 done