added wifi_drop.sh

bin/wifi_drop.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+while true ; do
+   if ifconfig wlan0 | grep -q "inet addr:" ; then
+      sleep 60
+   else
+      echo "Network connection down! Attempting reconnection."
+      ifdown --force wlan0
+      sleep 10
+      ifup --force wlan0
+      sleep 10
+    fi
+done
+