Add do function with data frame as the default return mode
Change do functions argument
Changes to the default histogram settings
Add cal lottery data
Troubleshooting histogram bugs
Chasing bugs
Fixing histogram bug
Fixing histogram bug
Fixing histogram bug
Histogram bug fixed. Problem was with changes we'd made in the sd function.
Made changes to load_lab function for Unit 2 revisions
Get ready to push changes to server
Merge pull request #39 from mobilizingcs/beta

Merge changes for unit 2 revisions.