update readme

Author: ptyadana

readme.md

@@ -9,6 +9,8 @@ Compilation of SQL - Tableau integration projects for Data Analytics, Business I
 ### Live Demo
 + [view Project Details on Tableau Public](https://public.tableau.com/profile/phonethiriyadana#!/vizhome/IntegratingSQLandTableauforDataAnalyticsandBusinessIntelligence/Dashboard1)
 
+[Dashboard on Tableu Public](https://raw.githubusercontent.com/ptyadana/SQL-Tableau-Data-Analysis-Visualization-Projects/master/screenshot.png)
+
 ## Projects
 **SQL - MySQL for Data Analytics and Business Intelligence**: data analysis and data visualizations for answering business related questions for management including,
 + What is breakdown between the male and female employees working in the company each year, starting from 1990?