rename boostrap as autogen

helps snapcraft

Author: jcupitt

ChangeLog

@@ -1,9 +1,10 @@
 started 8.3.1 on 19/5/16
 - disable debug by default, thanks Benjamin
 - configure changes to help win64
-- fix middle-drag in ws and image view
+- improve middle-drag in ws and image view
 - be more careful about the name of the image file we remove on close
 - simpler system for positioning new columns
+- rename boostrap.sh as autogen to help snapcraft
 
 started 8.3.0 on 28/3/16
 - move path search stuff into _convert from _magick

README.md

@@ -25,7 +25,7 @@ X](http://www.vips.ecs.soton.ac.uk/index.php?title=Build_on_OS_X).
 
 If you downloaded from GIT you'll need:
 
-	$ ./bootstrap.sh
+	$ ./autogen
 
 first to build the configure system.