Made auto-tagging not to depend on HEAD
Made auto-tagging not to depend on HEAD

using Travis's env variables: TRAVIS_BRANCH, TRAVIS_TRAG and TRAVIS_COMMIT
to determine when we need to create a tag, and what the build number should be

Sparrow-lang/sparrow,Sparrow-lang/sparrow,Sparrow-lang/sparrow,Sparrow-lang/sparrow,Sparrow-lang/sparrow