renamed games folder to entries folder (also contained frameworks, libraries, ...) and added to the backlog

entries/jmonkeyengine.md

@@ -0,0 +1,16 @@
+# jMonkeyEngine
+
+_Game engine, made especially for Java game developers who want to create 3D games._
+
+- Home: http://jmonkeyengine.org/
+- Media: https://en.wikipedia.org/wiki/JMonkeyEngine
+- State: mature
+- Download: https://github.com/jMonkeyEngine/sdk/releases
+- Keywords: framework
+- Code repository: https://github.com/jMonkeyEngine/jmonkeyengine.git
+- Code language: Java
+- Code license: 3-clause BSD
+
+## Building
+
+Uses gradle