Update ReadMe.md

ReadMe.md

@@ -5,6 +5,27 @@ opendrive_to_gazebo                        {#mainpage}
 
 Library to parse a OpenDrive 1.4 road file format to generate a launch file to spawn signals and objects on gazebo.
 
+This library has the following limitations:
+- Only DEU signals code is supported. The signals supported are:
+    - giveway
+    - haveway
+    - max_100
+    - max_50
+    - no_entry
+    - no_overtaking
+    - one_way
+    - parking
+    - pedestrian_crossing
+    - roadworks
+    - roundabout
+    - stop
+    - unmarked_intersection
+    - ahead_only
+    - turn_left
+    - turn_right
+- Only point objects are supported.
+- Only line, arc and parametric cubic curve geometries are supported.
+
 ## Installation
 
 * Add the labrobotica repository if it is not already added: