Installing additional format support : no matches found

When trying to follow the instructions to add further formats supports (under macos), I'm hit with a "no matches found" error. I figure it might be a me problem, but I'm not sure which. Can you help ?

The output : 

```
zsh: no matches found: git+https://github.com/ebroecker/canmatrix#egg=canmatrix[kcd]
```