Adding SHA1 checksum of P5 binary ZIP file
Adding SHA1 checksum of P5 binary ZIP file

Before asking user if he wants to proceed, to further tighten security,
by allowing user to verify the integrity of the binaries.zip file just
downloaded.

polterguy/phosphorus-five,polterguy/phosphorus-five,polterguy/phosphorus-five,polterguy/phosphorus-five,polterguy/phosphorus-five