added a Salmonella FASTA file
added a load sequence function
changed from camel case to underscores
added some new stuff
changed directory name
added HW3 starter files
removed assignment 3 files
changed definition of compelment
added a stub function I forgot
added another stub I forgot
added some debugging exercises
added doc strings
minor changes
removed assertion
Merge remote-tracking branch 'upstream/master'

because
Add salmonella.txt