Help for Mac
I am new to the whole terminal world, so please be forgiving if I ask stupid questions. 

Just tried to run the installation on Mac. 
Here's the error I got:

```
   git clone https://github.com/jschlatow/taskopen.git
cd taskopen
make PREFIX=/usr/local
sudo make PREFIX=/usr/local install

fatal: destination path 'taskopen' already exists and is not an empty directory.
make: Nothing to be done for `all'.
mkdir -p /usr/local/bin
mkdir -p /usr/local/share/man/man1
mkdir -p /usr/local/share/man/man5
install -m 0755 taskopen /usr/local/bin/taskopen
install: taskopen: Inappropriate file type or format
make: *** [install] Error 71
```

Any help?