docs: updated README with minimalistic instructions

Author: quintesse

README.md

@@ -4,3 +4,26 @@
 Context is a Java library for creating advanced user interfaces inside a console window
 
 This is a very early proof of concept, nothing to see here (yet)
+
+## Building
+
+To build the project, run the following command:
+
+```bash
+mvn clean package
+```
+
+## Running
+
+To see a simple demo of panels being drawn randomly on the screen, run the following command:
+
+```bash
+java -cp target/context-1.0-SNAPSHOT.jar <example_class>
+```
+
+Where `<example_class>` is one of the following:
+
+- examples.Boxes
+- examples.FullPanel
+- examples.InlinePanel
+- examples.SimpleDom