Fix various misspellings of things like "environment", "kernel", "default" and "volatile", and throw in a couple grammar fixes. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Board specific READMEs should be located inside the respective board directory. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>