Update README.md

Author: m-messer

README.md

@@ -1,3 +1,4 @@
 # Machine Learning-Based Automated Grading and Feedback Tools for Programming: A Meta-Analysis - Data Processing Repository
 
-The raw data and data processing for the paper "Machine Learning-Based Automated Grading and Feedback Tools for Programming: A Meta-Analysis".
+The raw data and data processing for:
+Messer, M., Brown, N., Kolling, M., & Shi, M. ( 2023). Machine Learning-Based Automated Grading and Feedback Tools for Programming: A Meta-Analysis. In Proceedings of the 28th ACM Conference on Innovation and Technology in Computer Science Education Vol. 1. Association for Computing Machinery.