coyote: CGHASIMAGEMAGICK

Description
Searches for the ImageMagick "convert" command to see if ImageMagick is available 
on the system.
Categories
Utilities
Keywords
version: out, optional, type=string
   Returns the version number of the ImageMagick convert command, if found.
Examples
Used to determine if the ImageMagick convert command is available::
   IDL> available = cgHasImageMagick(Version=version)
   IDL> IF available THEN Print, version
Author
FANNING SOFTWARE CONSULTING::
   David W. Fanning 
   1645 Sheely Drive
   Fort Collins, CO 80526 USA
   Phone: 970-221-0438
   E-mail: david@idlcoyote.com
   Coyote's Guide to IDL Programming: http://www.idlcoyote.com
History
Change History::
   Written, 17 January 2011. DWF.
Copyright
Copyright (c) 2011, Fanning Software Consulting, Inc.