dev-cmd/sponsors: tweak code.
dev-cmd/sponsors: tweak code.

- add named constants
- change an unless to if

MikeMcQuaid/brew,JCount/brew,EricFromCanada/brew,Homebrew/brew,sjackman/homebrew,nandub/brew,claui/brew,EricFromCanada/brew,EricFromCanada/brew,EricFromCanada/brew,sjackman/homebrew,JCount/brew,vitorgalvao/brew,nandub/brew,claui/brew,vitorgalvao/brew,claui/brew,nandub/brew,claui/brew,nandub/brew,sjackman/homebrew,vitorgalvao/brew,Homebrew/brew,vitorgalvao/brew,Homebrew/brew,sjackman/homebrew,Homebrew/brew,MikeMcQuaid/brew,JCount/brew,JCount/brew,MikeMcQuaid/brew,MikeMcQuaid/brew