Wrote out the pseudocode for RoomData::RunFrame

This method is too overloaded. The pseudocode itself takes up a whole
page.

server/barriers/barrier_api.cpp

@@ -81,6 +81,7 @@ static const luaL_Reg barrierLib[] = {
 	{"GetScript", getScript},
 	{"SetTag", setTag},
 	{"GetTag", getTag},
+	//NOTE: Why is the instance mutable?
 	{"SetInstance", setInstance},
 	{"GetInstance", getInstance},
 	{"SetStatus", setStatus},

server/barriers/barrier_data.hpp

@@ -39,6 +39,7 @@ public:
 	int SetScriptReference(int);
 	int GetScriptReference();
 
+	//NOTE: Why does this have tags? Are the tags used?
 	std::string SetTag(std::string key, std::string value);
 	std::string GetTag(std::string key);