This is a slightly modified version of http://jdewit.github.io/bootstrap-timepicker/ which supports bootstrap 3. You can check it out here. https://github.com/m3wolf/bootstrap3-timepicker Let me know if it does not work and I will try to find an alternative.
Update. Here is another one based off of the same version, but modified for bootstrap 3. https://github.com/rendom/bootstrap-3-timepicker
Update 2. Here is yet another one. http://bootstrapformhelpers.com/timepicker/