Dreamweaver cannot locate my GIT

Please help, for some reason Dreamweaver cannot locate my GIT eventhough I have installed it to my newly purchased Mac Book Pro which is updated with the latest software.  We have relaunched Dreamweaver and have tried and tried to use it but each time we get this message,'Dreamweaver could not locate the GIT client on your computer. Install Git and relaunch Dreamweaver to enable GIT features. You can also specify a custom path in Preferences'. Tried all of this but nothing works.  What am I supposed to do?  

Thanks in advance.