Updates to investor learner contract

[shereefb]

• Moved to separate contracts folder for future readability
• Simplified some legalese
• Defined different contract states and transitions between them

Still more work to be done defining the languages. I also think assessment and re-assessment are processes. And the actual assessment section of the contract should define the feedback that happens at the end (or during) the contract (for example Net promoter score at the end)

[jeffreywescott]

Nice work, @shereefb ... I like these changes. I made a few more tweaks, but didn't address the major issues you cited, which still are:

• Still more work to be done defining the languages.
• I also think assessment and re-assessment are processes.
• And the actual assessment section of the contract should define the feedback that happens at the end (or during) the contract (for example Net promoter score at the end).

[shereefb]

@jeffreywescott ok to merge with your branch?

[jeffreywescott]

Sure!