ASACORE-1051 Update instruction for support on Xcode 6.1

Change-Id: I3ff80b4c49620ac981dd1ad738605737eb53d27d
Signed-off-by: Nikhil Dabhade <ndabhade@qce.qualcomm.com>
Add best practices doc

Change-Id: Ia5f95e5c72fb542d519ad6ce53b02b40ec545f3a
Signed-off-by: Craig Dowell <cdowell@qce.qualcomm.com>