AcadiaMac.zip contains: zelcashd, zelcash-cli, zelcash-tx, zelcash-init and zcash-fetch-params
First time?
Open Terminal
Drag and drop zcash-fetch-params to Terminal, hit Enter
Drag and drop zelcash-init to Terminal, hit Enter
Open Finder, in menu Go choose Go to folder...
Type: /usr/local/bin/
Copy zelcashd, zelcash-cli and zelcash-tx in there
Open Terminal
Type zelcashd (if you want it to run in background type zelcashd -daemon)