Update README.md

Author: aaronring

README.md

@@ -1,4 +1,12 @@
 TidyDataProject
 ===============
 
-This repository contains all the relevant materials for the 'Getting & Cleaning Data' course project. 
+run_analysis.R performs the following tasks:
+  (1) Read in all the following files:
+        - X_test.txt (Test day for 
+        - X_train.txt
+        - y_test.txt
+        - y_train.txt
+        - subject_train.txt
+        - features.txt
+