add Dataset Acknowledgements

Author: 7086600

README.md

@@ -9,3 +9,8 @@ Goals: handle missing data in practice.
 There is a staffing agency that specializes in finding qualified candidates for development roles. One of their latest clients is growing rapidly and wants to understand what kinds of developers they can hire, and to understand general trends of the technology market. The organization has access to the Stack Overflow dataset, which consists of survey responses by developers all over the world for the last few years.
 
 This project is to put together several statistical analyses about the community to educate staffing agency client about the potential hiring market for their company.
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+## Dataset Acknowledgements
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+The dataset provided is the result of a series of surveys hosted by [Stack Overflow](https://survey.stackoverflow.co/) to understand their developer community. For the purposes of this project, the dataset has been slightly modified for the years 2018-2020.
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