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

games/yaml_cpp.md

@@ -0,0 +1,14 @@
+# yaml-cpp
+
+_YAML parser and emitter in C++ matching the YAML 1.2 spec._
+
+- Home: https://github.com/jbeder/yaml-cpp
+- State: mature
+- Keywords: library
+- Code repository: https://github.com/jbeder/yaml-cpp.git
+- Code language: C++
+- Code license: MIT
+
+## Building
+
+- Build system: CMake (shows deprecation warnings)