Fix usage message for 'ey logs'
Fix usage message for 'ey logs'

Change-Id: Ieadb745e75d21fd4d06fa1550cd1652d34929b3c
Reviewed-on: http://review.engineyard.com/290
Reviewed-by: Martin Emde <a91ed698dd43fa9a03bc54fdd0c320426601de56@engineyard.com>
Tested-by: Martin Emde <a91ed698dd43fa9a03bc54fdd0c320426601de56@engineyard.com>

engineyard/engineyard,cowboyd/engineyard,radamanthus/engineyard,engineyard/engineyard,radamanthus/engineyard