doc: updated list of similar projects

docs/CMakeLists.txt

@@ -25,7 +25,7 @@ add_custom_target(
         md/locator.md
         md/meta.md
         md/process.md
-        md/references.md
+        md/reference.md
         md/resource.md
         md/signal.md
         md/unreal.md

docs/md/references.md → docs/md/reference.md

@@ -34,6 +34,8 @@ I hope this list can grow much more in the future:
 * C#
   * [Entitas](https://github.com/sschmid/Entitas-CSharp): the ECS framework for
     C# and Unity, where _reactive systems_ were invented.
+  * [LeoECS](https://github.com/Leopotam/ecs): simple lightweight C# Entity
+    Component System framework.
   * [Svelto.ECS](https://github.com/sebas77/Svelto.ECS): a very interesting
     platform agnostic and table based ECS framework.