Merge pull request #32 from johnkabler/master

added my presentation topic
Update 

Removing Buffer
Merge pull request #33 from JessicaGarson/patch-2

Update
fill out structure for more R exercises
Updating to class 2 repository
Merge pull request #34 from pgrimm52/master

adding R homework
nicer (?) output format
updated monty hall code
add dataset research to new folder
Merge pull request #35 from pgrimm52/master

updated monty hall code
Merge pull request #36 from justmarkham/master

create dataset_research folder and add my research
JohnK Monty Hall sim