Addded animal shelter app.
Updated code for to_s on Animal and Person
Animal Shelter app working well and file setup for Stock Trading App.
Fixed bug in Animal Shelter on Rehoming Pets
Removed duplocated files in w1d5 directory
Shell setup for Trading App - no functionality yet.
Added methods for listing with to_s but issues. About to start a new branch without relying on class to_s method.
All code working for everything except buy and sell stock.
Completed the homework - all code working (I think).
removing files from the working directory after branch.
Adding completed files to the working directory after branch. All homework complete.
Fixed the issue with naming the unique key for stocks. All functions working perfectly.
Added an error method if trying to sell stock you don't have.
Tidied up formatting.
Merge pull request #55 from daniel1bell/master

w1d5 Trading App Completed