Create an alias of the command curl with the parameter -O
echo 'alias wget="curl -O"' >> ~/.bash_profile
Reboot the terminal session or open a new one to get the bash_profile loaded witht he new alias. You can also force loading the new basch_profile with the command
source ~/.bash_profile
Now you can use the wget command like in any Unix machine
wget http://ghost.org/zip/ghost-0.3.3.zip