python: do not show C++ signature in docstring

bindings/python/module.cpp

@@ -21,8 +21,9 @@ using namespace pinocchio::python;
 
 BOOST_PYTHON_MODULE(libpinocchio_pywrap)
 {
-  bp::scope().attr("__version__") = pinocchio::printVersion();
+  bp::docstring_options module_docstring_options(true,true,false);
   
+  bp::scope().attr("__version__") = pinocchio::printVersion();
   bp::scope().attr("__raw_version__") = bp::str(PINOCCHIO_VERSION);
   eigenpy::enableEigenPy();