Merge pull request #19 from alfs/patch-1

Make sure the gpio tool is installed

> My freshly installed raspbian lacked the gpio tool used in the reconnect script.
> Please also include this installation (part of the wiringpi package)

ppp_installer/install.sh

@@ -80,8 +80,8 @@ fi
 #	esac
 #done
 #'
-echo "${YELLOW}ppp install${SET}"
-apt-get install ppp
+echo "${YELLOW}ppp and wiringpi (gpio tool) install${SET}"
+apt-get install ppp wiringpi
 
 echo "${YELLOW}What is your carrier APN?${SET}"
 read carrierapn 
@@ -191,4 +191,4 @@ do
 done
 
 read -p "Press ENTER key to reboot" ENTER
-reboot
+reboot