Wiki updates

Developing.md

@@ -1,5 +1,38 @@
 # sdrtrunk - Developers/Developing
 
-This wiki will contain details about the sdrtrunk architecture and information for developers that may want to either 
-contribute to the project or use the source code in other projects.
+This wiki will expand to contain details about the sdrtrunk architecture and information for developers that may want 
+to either contribute to the project, experiment with the source code, or use the source code in other projects.
 
+### OpenJDK
+sdrtrunk requires **Java JDK 18 with integrated Open JavaFX** libraries. OpenJDK vendors that I use include:
+* [Azul Zulu OpenJDK](https://www.azul.com/downloads/?package=jdk)
+* [Bellsoft Liberica OpenJDK](https://bell-sw.com/pages/downloads/#/java-17-lts%20/%20current)
+* [SDKMAN](https://sdkman.io/) - not an SDK vendor, rather an SDK selection tool.  Linux Only
+
+Use the gradle wrapper to build the source code:
+
+### Linux
+```
+./gradlew clean build
+```
+### Windows
+```
+gradlew.bat clean build
+```
+
+The **/build/distributions** folder will contain the zip file of the compiled program.  Unzip it and launch the program from the scripts in the **/bin** directory.
+
+## Run the Application (from Gradle)
+
+### Linux
+```
+./gradlew clean run
+```
+### Windows
+```
+gradlew.bat clean run
+```
+
+
+## Development
+All dependencies/versions are controlled from build.gradle.