I got an error with single quotes
I got an error with single quotes

$ carthage update
Parse error: unexpected trailing characters in line: github 'cruffenach/CRToast'

Changed to double quotes:

```
$ carthage update
*** Cloning CRToast
*** Checking out CRToast at "0.0.9"
```
cruffenach/CRToast,dmiedema/CRToast,Trueey/CRToast,perrystreetsoftware/CRToast,gohjohn/CRToast