Formula should be visible

Hey there. You want the `Formula` directory at the top level, I think, not inside `Library` for a tap.

Once I made this switch, `brew any-tap` worked:

    {homebrew= 38d6222}$ brew any-tap tangram https://github.com/telemachus/tangram
    Cloning into '/usr/local/Library/Taps/tangram'...
    remote: Counting objects: 64, done.
    remote: Compressing objects: 100% (41/41), done.
    remote: Total 64 (delta 29), reused 56 (delta 21)
    Unpacking objects: 100% (64/64), done.
    Tapped 2 formula
    {homebrew= 38d6222}$ brew any-tap
    homebrew-dupes
    tangram
    telamchus-desc
    telamchus-vim
    telemachus-anytap