Use sciencebeam-utils and sciencebeam-alignment (#35)

* added sciencebeam-utils and sciencebeam-alignment dependency

* replaced local alignment module with sciencebeam-alignment

* replaced local beam_utils with sciencebeam-utils

* replaced local utils with sciencebeam-utils for modules that have moved

* removed tools that have been moved to sciencebeam-utils

* removed utility functions that have moved to sciencebeam-utils

* updated readme