Created assignment 1 for the 1st lecture

I will tackle this again when I get back.
Merge branch 'master' of https://github.com/achubaty/datawranglR
Updated 1st assignment on R basics
Added consistent format to assignment. Gave a little more direction in questions 6.
finished adding content to first lecture (slides)
Merge branch 'master' of https://github.com/achubaty/datawranglR

get caught up on all the changes
finished adding content to first lecture
renamed lesson 2 folder to use dashes instead of underscores
remove redundant folder (with underscores in name) for lesson 2
cleaned up assignment 1 -- made it a bit easier.
removed a few questions from assignment 1
Add .gitignore and update plyr/ggplot notes
Merge remote-tracking branch 'upstream/master'