developer import from sourceforge

entries/spacetrader_for_java.md

@@ -4,11 +4,15 @@
 - Inspiration: Space Trader
 - State: mature, inactive since 2010
 - Download: https://sourceforge.net/projects/spacetraderjava/files
+- Platform: Windows, Linux, macOS
 - Keyword: strategy, space, turn-based
 - Code repository: https://github.com/osgamearchive/spacetraderjava.git (conversion of cvs and svn), https://svn.code.sf.net/p/spacetraderjava/code (svn), http://spacetraderjava.cvs.sourceforge.net (cvs)
 - Code language: Java
 - Code license: GPL-2.0
+- Developer: Aviv Eyal
 
-This port is based upon the C# port at Space Trader for Windows.
+This port is based upon the C# port at Space Trader for Windows. Requires also jwinforms (https://sourceforge.net/projects/jwinforms/).
 
 ## Building
+
+- Build system: Ant, Gradle