Update README.md

Author: brittjay0104

README.md

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-# CausalTesting-Artifact_ICSE20
-This repository contains the components of the ICSE 2020 technical research paper "Causal Testing: Understanding Defects' Root Causes". 
+# Causal Testing Artifact (ICSE 2020)
+
+This is the artifact for the paper *"Causal Testing: Understanding
+Defects' Root Causes"*. This artifact replicates the user study setup
+used to evaluate our technique, including the supplementary data
+collection materials.
+
+## What is included in the artifact?
+
+Our artifact includes the following:
+
+1. A virtual machine file (CausalTesting_Artifact.ova) that contains
+the user study setup and version of Holmes used.
+
+2. The form participants completed as they worked through
+each defect in the user study (Cause-Identification-Form.pdf).
+
+3. The post-questionnaire participants filled out as a form of
+debriefing following the study (Evaluation-Questionnaire.pdf)
+
+4. The demographic questionnaire used to gather information about our
+   participants background and experience (Demographic-Questionnaire.pdf).
+
+5. The script used to explain to participants what they would be doing
+   during the user study (User-Study-Script.pdf).
+
+## Where can I obtain the artifact components?
+
+All the above listed artifacts can be found in the following github
+repository:
+
+The **INSTALL.md** file provides details on how to set up and run the
+virutal machine. The other components of the artifact are made
+available for exploration and re-use.