Output in the absence of git

[rkotkiewicz]

If the PATH variable does not contain git, then after running the command ./gradlew initShipkit you get:

...
Task :identifyGitOrigin
  Executing:
    git remote get-url origin
  Problems getting url of git remote origin (run with -i or -d for more info).
  Using fallback 'unspecified-user/unspecified-repo' instead.
  Please update it in the shipkit file.
...

I think that the message should contain information about the lack of git.