def tag(name, path = Dir.pwd, opts = {})
      g = MiniGit.new(path)
      g.tag opts, name
    end
def tag(name, path = Dir.pwd, opts = {})
      g = MiniGit.new(path)
      g.tag opts, name
    end
last_tag_commit
 Create a new tag
 You can add extra options to the git tag command through the opts hash.
 Ex:
   FalkorLib::Git.tag('name', dir,  { :delete => true } )