Added opendrive included files error solution

ReadMe.md

@@ -85,6 +85,16 @@ and it is also necessary to link with the desired libraries by using the followi
 
 ``` TARGET_LINK_LIBRARIES(<executable name> ${autonomous_driving_tools_LIBRARY}) ```
 
+## Troubleshooting
+
+- When compiling a ROS node that uses the library the following erros appears:
+
+    ``` ‘signal’ in namespace ‘::’ does not name a type: ```
+
+    **Solution:** Al the opendrive related files must be included before the include of *iri_base_algorithm* or *iri_base_driver*.
+
+
+
 ## Disclaimer  
 
 Copyright (C) 2009-2018 Institut de Robòtica i Informàtica Industrial, CSIC-UPC.