Add README.md

README.md

+# road_description
+
+## Description
+
+This package contains the urdf and launch files to load road images, which can be used in simulation.
+Developed at Institut de Robòtica i Informàtica Industrial (IRI, CSIC-UPC) (www.iri.upc.edu)
+Contact: labroboticamobil@iri.upc.edu
+
+## Installation
+
+Clone the package inside a ROS workspace, although it will normally come within a rosinstall file. 
+
+Download the png in `urdf/roads/dae/png` from  shared drive space `LaboratoriIRI/Projects/ADC/simulator/roads/*.png`
+
+## How to use it
+
+`roslaunch road_description spawn_road.launch rviz:=true`