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

entries/polis.md

@@ -0,0 +1,13 @@
+# Polis
+
+_Turn based strategy game, ambiented in ancient Greece._
+
+- Home: https://code.google.com/archive/p/polisgame/
+- State: mature, inactive since 2016
+- Keywords: strategy
+- Code repository: https://github.com/juanjepl/polisgame.git, https://code.google.com/archive/p/polisgame/source/default/source
+- Code language: Java
+- Code license: GPL-3.0
+
+## Building
+