Earn a reward

[EDzidziguri]

Statement of Value

As a Contributor
I want to invest funds to a campaign
So that I will be able to receive a reward

Acceptance Criteria

1. When a reward is in "Active" status
   and not all rewards have been earned (a number of Contributors who earned a reward is less then a reward q-ty)
   and a Contributor invests more than a minimum funding amount or equal amount,
   then make a Contributor eligible to claim a reward after the campaign is successfully completed.

2. One unique reward can be earned by Contributor once.