Update README.md

Added placeholders for new sections.

README.md

@@ -5,13 +5,25 @@
 <img align="right" src="https://github.com/Comcast/xCOMPASS/blob/main/personas/figures/compass-logo-png.png">
 <div align="justify">xCOMPASS is a questionnaire developed from <a href='https://github.com/Comcast/xCOMPASS/tree/main/personas'>Models of Applied Privacy (MAP)</a> personas. Privacy Threat Modeling (PTM) is part of software development lifecycle (SDL) along with the increasing awareness of data privacy. Unfortunately, PTM comes with the following limitations. First, it mostly involves human experts (i.e., threat modelers) with much manual effort. Second, it is usually performed later in the SDL pipeline, during which much development work has been finished. Third, the app developer is usually not familiar with privacy principles (e.g., privacy laws) that can guide the development process. To address these problems, xCOMPASS presents a lightweight questionnaire (i.e., yes-no questions), identifies privacy requirements based on the answers, and maps the requirements to privacy principles (e.g., privacy laws) and mitigation strategies (e.g., de-identification).</div>
 
-# Learn More
+## Learn More
 
 Please feel free to learn more about the questionnaire questions, as well as MAP framework by following these links:
 
 - [xCOMPASS Questionnaire](https://github.com/Comcast/xCOMPASS/tree/main/questionnaire)
 - [Models of Applied Privacy (MAP) personas](https://github.com/Comcast/xCOMPASS/tree/main/personas)
 
+# Quickstart
+
+Please stay tuned! This section is a work in progress. :grin:
+
+# Who Can Benefit
+
+Please stay tuned! This section is a work in progress. :grin:
+
+# What I Can Do with It
+
+Please stay tuned! This section is a work in progress. :grin:
+
 # Contribution
 
 We welcome all kinds of contributions to this repository! Please have a look at [CONTRIBUTING.md](https://github.com/Comcast/xCompass/blob/main/CONTRIBUTING.md) for further information and guidelines.