fix helm-gtags-select error

It is an error to the `helm-gtags-select` and Goto the location.
`helm-source-gtags-select-tag-action` is called the `helm-gtags-common` but "wrong-type-argument symbolp"
Merge pull request #3 from f-kubotar/fix-helm-gtags-select

fix helm-gtags-select error
bump up version and update changes