Proposed fix for issue #2 Install fails

I get this error from pub get:
Pub: Get Dependencies: Package toastd depends on unittest from unknown source "sdk".

After changing pubspec to this:
  toastd: #">=1.0.0 <2.0.0"
    git: https://github.com/darkoverlordofdata/toastd


Pub: Get Dependencies: Got dependencies successfully.