Mention need for db dev package

[README] Mention need for db dev package
This has always been an annoyance for me whenever i moved to a new
machine. Just mention it in the readme hoping it will save someone
some cycles

Signed-off-by: J Hadi Salim <hadi@cyberus.ca>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
1 file changed