Merge branch 'type_identifier' into 'master'

add type_identifier method to binary<SkinWeights>

See merge request !1

ObjectTypes/Skeleton/BaseSkin.hh

@@ -144,6 +144,8 @@ namespace OpenMesh {
 
       // return binary size of the value
 
+      static std::string type_identifier() { return "SkinWeights"; }
+
       static size_t size_of(void) 
       { 
         return UnknownSize;