gnucash-docs maint: Put cmake info before the deprecated autotools info

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/7bc23844 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/a001c20e (commit)



commit 7bc2384479e236e40bcec0eb2f7553450f699981
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Wed Feb 10 13:03:41 2021 +0100

    Put cmake info before the deprecated autotools info



Summary of changes:
 README | 63 +++++++++++++++++++++++++++++++--------------------------------
 1 file changed, 31 insertions(+), 32 deletions(-)