Working on chapter 5

Pausing section Dealing with Update Conflicts on p. 80.  TO-DO: debug write into database, currently is not working.
Midway through chapter 5.

Data is being imported into database, however the unit test functions but does not pass.  Not sure why. TODO: start on Mapreduce section.
Completed chapter 5.

Completed all of chapter 5.  Unit test still not working (think it's due to changes in versions of packages used in text, those errors happened earlier)
Merge pull request #4 from amolborcar/chapter_5

Chapter 5