add license to gemspec.
Update README.md
Update README.md
add specs, fix a bug :)
fix same bug in move_previous
move_previous spec
add id128 specs
de-dup move next/prev specs
stub out missing specs
Merge pull request #12 from ledbettj/specs

Specs + Minor Bug fixes
version bump
Merge pull request #13 from ledbettj/develop

version 0.1.3