Merge pull request #1 from skunath/master

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Merge pull request #2 from skunath/master

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Merge pull request #3 from skunath/updates_portfolio

Updates portfolio
Merge pull request #4 from skunath/updates_portfolio

big changes
Merge pull request #5 from skunath/master

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Merge remote-tracking branch 'origin/updates_portfolio' into updates_portfolio

Conflicts:
	asset.rb
	portfolio.rb
Merge pull request #6 from skunath/updates_portfolio

Merge remote-tracking branch 'origin/updates_portfolio' into updates_por...
Merge pull request #7 from asyndent/brokerage

Brokerage
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.
merge
Created the `data_source` abstraction to allow for multiple kinds of data sources.
Merge branch 'datasource' of github.com:astine/ROQTI into datasource