Updated Carol's slides
Merge branch 'master' of https://github.com/deannachurch/BHSC_Bioinformatics into gh-pages
update to add Carol's slide updates
adding what is probably the wrong ppt slides
Day 4 slide updates and add Joanne's slides
Merge branch 'master' of https://github.com/deannachurch/BHSC_Bioinformatics into gh-pages
updates for Day 4 slides plus add Joanne's slides