[scene] Update scene spaces and doc

Author: epernod

README.md

@@ -7,32 +7,38 @@ This plugin interfaces [CGAL Skeletonization](https://doc.cgal.org/latest/Surfac
 
 The build can be done In-tree or Out of tree, see SOFA  [documentation](https://www.sofa-framework.org/community/doc/plugins/build-a-plugin-from-sources/).
 
+- CGAL version needed should be greater than 4.9
+- SOFA version compatible since v22.06 
 
 
 ## Usage
 
 The example bellow store in the output file the skeleton of a the input vessel mesh. 
 ```xml
 <Node name="root" dt="0.01" gravity="0 -1 0">
-	<VisualStyle displayFlags="showVisual showCollisionModels showWireframe"/>
-    <RequiredPlugin pluginName="MeshSkeletonizationPlugin"/>
-    <RequiredPlugin pluginName='SofaOpenglVisual'/>
+    <VisualStyle displayFlags="showVisual showCollisionModels showWireframe"/>
+    <RequiredPlugin name="Sofa.GL.Component.Rendering3D"/> <!-- Needed to use components [OglModel] -->
+    <RequiredPlugin name="Sofa.Component.Visual"/> <!-- Needed to use components [VisualStyle] -->
+    <RequiredPlugin name="Sofa.Component.SceneUtility"/> <!-- Needed to use components [InfoComponent] -->
+    <RequiredPlugin name="Sofa.Component.IO.Mesh"/> <!-- Needed to use components [MeshOBJLoader] -->
+    <RequiredPlugin name="MeshSkeletonizationPlugin"/>
 
-    <MeshObjLoader name="meshLoader" filename="../data/mesh/vessels.obj" />
+    <DefaultAnimationLoop />
+    <MeshOBJLoader name="meshLoader" filename="../data/mesh/vessels.obj" />
 
     <MeshSkeletonization template="Vec3d" name="skeleton"
                     inputVertices="@meshLoader.position" inputTriangles="@meshLoader.triangles"
-                    inputFile="../data/skeletons/output_vessels_skeleton.txt"
+                    outputSkeleton="../data/skeletons/output_vessels_skeleton.txt"
                     />
 
     <Node name="visual">
         <OglModel src="@../meshLoader"/>
     </Node>
-	
+    
 </Node>
 ```
 
-It is important to specify the ```inputFile``` in which the plugin will write the centerlines. 
+It is important to specify the Data ```outputSkeleton``` in which the plugin will write the centerlines. 
 
 This file will contain a set of points per polyline, polylines are separated by an empty line. Biforcation points can be found on their corresponant polylines.