Build a funnel visualisation with cola.js and json data

Build a visualisation which shows progression of leads through stages of a campaign. Data is provided as json and the visualisation should use [login to view URL] - [login to view URL] The data is an array of stages. Each stage is an array of sources with counts of leads. A lead is a single customer or prospect, and a source is something which generates prospects such as google ads or facebook posts. Eg there might be 10 leads from google in the acquisition stage. Example data is here: [login to view URL] The visualisation will show stages as rows, with the initial stage at the top and last stage at the bottom. Each stage contains circles representing each source, and the size of the circle represents the count of leads in that stage. This should only take a few hours (less if you already know cola), and it must be completed within 48 hours of the project being awarded.