feat: added build instructions to README

fixes #2

Co-authored-by: psalqvist <psalqvist@users.noreply.github.com>

README.md

@@ -18,6 +18,28 @@ This is a collection of algorithms and data structures I've implemented in my ac
 
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+# Building from Source
+
+This project uses the [Apache Ant](https://ant.apache.org/) build system. 
+
+## Building
+
+```sh
+ant build
+```
+
+## Running the Tests
+
+```sh
+ant run_test
+```
+
+## Running the Benchmarks
+
+```sh
+ant run_timing
+```
+
 # What's been implemented:
 
 ## Table of Contents