gnucash maint: Update README to refer to wiki Submitting_Patches as per github discussion re this file.

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/2d68c815 (commit)
	from  https://github.com/Gnucash/gnucash/commit/1b3f7112 (commit)



commit 2d68c81575e72b607edbeae273e9f9f3dd55ce97
Author: goodvibes2 <chris.good at ozemail.com.au>
Date:   Wed Jun 22 09:33:44 2016 +1000

    Update README to refer to wiki Submitting_Patches as per github
     discussion re this file.



Summary of changes:
 README | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)