Add a BlackPearl compatibility section to the README that indicates it's only compatible with version 1.1.
Add a BlackPearl compatibility section to the README that indicates it's
only compatible with version 1.1.

SpectraLogic/ds3_browser,SpectraLogic/ds3_browser,Klopsch/ds3_browser,Klopsch/ds3_browser,SpectraLogic/ds3_browser,Klopsch/ds3_browser