Merge pull request #6 from skunath/updates_portfolio

Updates portfolio
Brokerage Stuff

Added some stuff to the brokerage

1. Added capacity to display account returns on a given day
2. Added capacity to display what assets the brokerage currently has

I'm not sure that I've done it in a good/intelligent way, but thought I
would commit what I have and see what the group thinks.
Merge pull request #14 from asyndent/brokerage

Brokerage
big changes

Updates to a number of classes.
big changes

Updates to a number of classes.
big changes

Updates to a number of classes.
First of the rspec tests and what not
Merge pull request #16 from skunath/initial_rspec_testing

big changes
Merge pull request #7 from skunath/development

Development
Re-invest

Changed the “yes” or “no” for the re-invest to the asset.rb.
Also, added “portfolio.rb” to the library and fixed the
test.rig.brokerage
Merge pull request #17 from jredlinger/re-invest_2

Re invest 2
Merge pull request #8 from skunath/development

Development