Part of the fix for Bug 628 is to add a note that bitbake requires
python 2.6. I added this note before the example bitbake command
that builds an image. I also added a linked reference to the Poky
Reference Manual and mentioned the FAQ appendix. There will be more
information about the python requirement in the FAQ.
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>