Fixed issue #77, limit geometry info to first image frame

Makefile

@@ -1,4 +1,4 @@
-VERSION = git-20130127
+VERSION = git-20130129
 
 PREFIX    = /usr/local
 MANPREFIX = $(PREFIX)/share/man

image-info

@@ -8,7 +8,7 @@
 filename=$(basename "$1")
 filesize=$(du -h "$1" | cut -f 1)
 
-geometry=$(identify -format '%wx%h' "$1")
+geometry=$(identify -format '%wx%h' "$1[0]")
 
 tags=$(exiv2 -q pr -pi "$1" | awk '$1~"Keywords" { printf("%s,", $4); }')
 tags=${tags:+|}${tags%,}