Added my attempt with exception handling
Merge pull request #2 from kmooney/master

My attempt...
links for 4-30 topics
pulling in changes from last meeting
contact info
basic lists tutorial
merging
Update numbers.md
Update lists.md
Update lists.md
Adding my answer to the number-guessing game
changed guess_number
Added dorothy's guess number program
adding CSV resources
Merge branch 'master' of https://github.com/acpigeon/austinlp

pulling in murf's changes
better commenting in CSV files
added blurb for negative indexing
Update lists.md
Update lists.md
Update lists.md