-changed README

-license changed to BSD (maybe temporary)
-added configurations to dub.json
-initial ECS implementation (WIP):
	-Manager, System, Entity, Component
	-registering components
	-registering systems
	-calling update

source/ecs/entity.d

@@ -0,0 +1,18 @@
+module ecs.entity;
+
+struct EntityID
+{
+    uint id;
+    uint id_count;
+}
+
+struct Entity
+{
+    EntityID id;
+}
+
+struct EntityTemplate
+{
+    uint[] components;
+    Entity* entity;
+}