This patch reworks the section 'Step-by-step instructions for storing
configuration' as follows:
- rename into 'Quick guide to storing your project-specific customizations'
and hence make it serve as a summary to the chapter
- change the introduction to make this clear
- update paths to line-up with section 'recommended directory structure'
- recommend BR2_GLOBAL_PATCH_DIR, as is done in the section on adding
patches.
- mention how to add packages in a project-specific directory (to be
expanded in another patch)
- minor rewording
- rename file into customize-quick-guide.txt
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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