Adding build instructions to the README

README.md

@@ -21,3 +21,22 @@ There is a separate repository of documentation, both for end users
 and for developers: [https://github.com/cogtool/documentation.git](https://github.com/cogtool/documentation.git)
 TODO Merge this seperate repo with the in-branch, GitHub Pages-powered `docs/` folder.
 
+## Building
+To compile CogTool,
+1. Download the source code from [GitHub](https://github.com/CogTool-Modern/cogtool).
+2. Install [Apache Ant](https://ant.apache.org/bindownload.cgi)
+3. From within the project directory, run `ant` 
+
+Running the `ant` command begins the build process specified in `build.xml`. 
+
+<details markdown="1">
+<summary>Building on Windows</summary>
+
+The step in the build process for building Windows installers will only happen when building CogTool on Windows. This steps assumes that you have installed [NSIS](https://nsis.sourceforge.io/Main_Page) and the executable is available at `C:\Program Files (x86)\NSIS\makensis.exe`
+
+</details>
+
+### Related 
+- [CogTool - 32-bit build instructions](https://github.com/cogtool/documentation/blob/master/Processes/configuring-development-machines.txt)
+- [Download Apache Ant](https://ant.apache.org/bindownload.cgi)
+