Renamed .ent to .rem - Reflex Entity Mapping file to avoid confusion

src/EntityConverter.cpp

@@ -684,7 +684,7 @@ EntityConverter::mapEntities (const std::string &mapFile)
   fin.open (mapFile);
 
   if (fin.is_open()) {
-    //Read .ent contents into pickup map
+    //Read Reflex Entity Mapping file contents into pickup map
     std::string line;
     while (std::getline (fin, line)) {
       std::istringstream iss (line);
@@ -698,7 +698,7 @@ EntityConverter::mapEntities (const std::string &mapFile)
     }
   }
   else {
-    throw std::ios::failure ("Error: EntityConverter failed to open .ent file");
+    throw std::ios::failure ("Error: EntityConverter failed to open Reflex Entity Mapping file");
   }
   fin.close();