Fix to handle label and timestamp argument correctly

Signed-off-by: Tsuyoshi Ozawa <ozawa.tsuyoshi@gmail.com>
Remove needless comment

Signed-off-by: Tsuyoshi Ozawa <ozawa.tsuyoshi@gmail.com>
exclude specs2.
see https://github.com/lift/framework/issues/1397
Merge pull request #7 from xuwei-k/exclude-specs2

To compile correctly, exclude the dependency on specs2.