moved the entries up one folder, added the folder to the keywords

games/twin_engine.md

@@ -0,0 +1,14 @@
+# TwinEngine
+
+_A Little Big Adventure engine._
+
+- Home: https://github.com/xesf/twin-e
+- State: mature, inactive since 2015
+- Keywords: adventure, engine, remake, requires original content (Little Big Adventure 1)
+- Code repository: https://github.com/xesf/twin-e.git
+- Code language: C
+- Code license: GPL-2.0
+- Code dependencies: SDL
+
+## Building
+