"dgraph-ratel -version" provides no version number

Moved from GitHub ratel/175

Posted by svenhartz:

Neither dgraph-ratel -version nor ./build/ratel -version delivers a version number.

The output in both cases is: Ratel Version: with no number

How to reproduce

Go to your terminal an type dgraph-ratel -version and press enter.

Observed behavior

Terminal output: Ratel Version:

Expected behavior

Terminal output: Ratel Version: <version number based on new versioning rules>