Make the background transparent [1]

Slight tweaks to the font size and kerning

Submitted by:	Igor Mozolevsky <igor@hybrid-lab.co.uk> [1]

share/images/callouts/gen.sh

@@ -4,5 +4,6 @@
 
 for i in `seq 1 30`
 do
-    convert -size 101x101 xc:white -fill black -draw 'circle 50,50 50' -fill white -stroke none -pointsize 85 -gravity center -kerning -1 -font Helvetica-bold -draw "text 0,5 \"$i\"" -scale '12x12' $i.png
+    convert -size 101x101 xc:green -transparent green -fill black -draw 'circle 50,50 50' -fill white -stroke none -pointsize 83 -gravity center -kerning -5 -font Helvetica-bold -draw "text 0,5 \"$i\"" -scale '12x12' $i.png
+
 done