trying to make a change and pull request
Changes/additions to Bioconductor_intro.Rpres

I added some notes as well as a few changes that I needed to make in
order to get the presentation to work.
Merge pull request #3 from earosenthal/master

I have accepted the changes.
Updated presentations
Lecture notes on Batch correction
Added some code on differential expression
Updated timeline and more lecture notes
Create Final-project.md