Configurable image size

src/freedombone-image

 VMDEBOOTSTRAP_REPO=git://git.liw.fi/vmdebootstrap
 VMDEBOOTSTRAP_VERSION=0.8
 MAKEFILE=${PROJECT_NAME}-image-makefile
+IMAGE_SIZE=4G
 
 USERNAME=$(echo $USER)
 PASSWORD=
     shift
     PASSWORD="$1"
     ;;
+    -s|--size)
+    shift
+    IMAGE_SIZE="$1"
+    ;;
     # Box static IP address on the LAN
     --ip)
     shift
     NAMESERVER1="$NAMESERVER1" \
     NAMESERVER2="$NAMESERVER2" \
     PROJECT_NAME="$PROJECT_NAME" \
-    CONFIG_FILENAME="$CONFIG_FILENAME"
+    CONFIG_FILENAME="$CONFIG_FILENAME" \
+    IMAGE_SIZE="$IMAGE_SIZE"
 
 shopt -s nullglob
 imgfiles=(build/${PROJECT_NAME}*.img)