A solution for Lesson 4 Problem Set - Improving the Index
Merge remote-tracking branch 'upstream/master'
Solution to Lesson 3 Problem Set Optional - Word Count
Added in comments to Chap 4, Optional Qs, Word Count
Added comments
Merge remote-tracking branch 'upstream/master'
Lesson 5 Problems, 04 when offered, hints and solution
Update ReadMe with link to fork/push blog post
Fixed white space
Merged README.md problems and other py to md file extension changes by others
Merge pull request #8 from tracymu/master

Lesson 4 Optional Problems 'Word Count'