Create 2014-02-07-bdferrcodingbat1.md

This has CodingBat exercise screenshots and my comments on three problems.
Update 2014-01-31-stringsandlists.md

I updated the title as requested.
Update 2014-02-07-bdferrcodingbat1.md

I fixed my screenshots, hopefully.
Update 2014-02-07-bdferrcodingbat1.md

I had "might was well" instead of "might as well."
Update 2014-02-07-bdferrcodingbat1.md

I replaced my commentary on the Level 2 problems with commentary on the Level 1 problems, and deleted unnecessary spaces between image names and image file URLs.
Merge pull request #230 from bdferr/gh-pages

First CodingBat Assignment