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

entries/open_yahtzee.md

@@ -0,0 +1,16 @@
+# Open Yahtzee
+
+_Open-source version of the classic dice game Yahtzee._
+
+- Home: http://www.openyahtzee.org/, https://sourceforge.net/projects/openyahtzee/
+- State: mature, inactive since 2016 
+- Download: http://www.openyahtzee.org/wiki/download/, https://sourceforge.net/projects/openyahtzee/files/
+- Platform: Windows, Linux
+- Keywords: strategy, dice game
+- Code repository: https://git.code.sf.net/p/openyahtzee/code, https://gitlab.com/osgames/openyahtzee.git (+)
+- Code language: C++
+- Code license: GPL-2.0
+
+Infos about [Yahtzee](https://en.wikipedia.org/wiki/Yahtzee).
+
+## Building