linedotchart readme update

README.md

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 [![Build Status](https://travis-ci.org/Microsoft/powerbi-visuals-linedotchart.svg?branch=master)](https://travis-ci.org/Microsoft/powerbi-visuals-linedotchart) [![Coverage Status](https://coveralls.io/repos/github/Microsoft/powerbi-visuals-linedotchart/badge.svg?branch=master)](https://coveralls.io/github/Microsoft/powerbi-visuals-linedotchart?branch=master)
 
 > The LineDot chart is an animated line chart with fun animated dots. Use the LineDot chart to engage your audience especially in a presentation context. The bubbles size can be dynamic based on data you provide. A counter is provided that you can use to show a running value as the chart animates. Format options are provided for Lines, Dots, and Animation.
+
+![linedotchart screenshot](https://az158878.vo.msecnd.net/marketing/Partner_21474836617/Product_42949680588/Asset_79376a97-0a89-48f3-9b3d-5396b4e5808b/LineDotChartscreenshot2.png)
+# Overview
+The LineDot chart is an animated line chart with fun animated dots.
+
+Use the LineDot chart to engage your audience when presenting data. The size of the bubbles can be customized based on data.
+
+Use the counter to show a running total as the chart animates. Format options are provided for Lines, Dots, and Animation.
+
+See also [LineDot Chart at Microsoft Office store](https://store.office.com/en-us/app.aspx?assetid=WA104380766&sourcecorrid=e631dfc3-2bda-4830-84a7-9fb39892648f&searchapppos=0&ui=en-US&rs=en-US&ad=US&appredirect=false)