UBIFS FAQ Questions: minor edits

[Philip Rakity]

a) Order backwards ?
How to create an UBIFS image?

	* mkfs.ubifs which creates UBIFS images;
	* ubinize which creates UBIFS images out of UBI images.Isn't this the other way around ?  uninize creates UBI images from UBIFS images ?


b) please add a sentence or two saying how to burn ubi images.  something like
The ubi image may be burn into flash using the ubiformat utility (see here) or by a commercial flash burner.