Merge pull request #6 from skunath/updates_portfolio

Updates portfolio
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