rename and add link to example data

Former-commit-id: c5d496b678

README.md

@@ -26,3 +26,7 @@ From Meshlab 1.3.3:
 		* Filters:Remeshing, Simplification and Reconstruction:Surface Reconstruction Poisson
 	* Texture the mesh
 		* Parameterization + texturing from registered rasters
+
+---
+
+Example data can be found at https://github.com/OpenDroneMap/odm_data