Update to 4.0
Merge pull request #11 from infosiftr/update

Update to 4.0
Change update.sh to munge "4.0" into "4.0.0" so we keep the "4.0.0" tag when "4.0.1" comes around
Merge pull request #12 from infosiftr/update

Change update.sh to munge "4.0" into "4.0.0" so we keep the "4.0.0" tag when "4.0.1" comes around
Update download URL to be correct