Documentatio update

README.txt

 
 Dynamic code generation :
 	python3 scripts/refreshdyn.py examples/em_test.pickle OUTPUTFILE.py
+
+Instance creation :
+	Use the script in scripts/create_instance.sh
+
+	Usage : scripts/create_instance.sh instance_name instance_dir [lodel_libdir]

__init__.py

+## @package install Contains the base files for a lodel2 instance
+#
+# An instance is composed of multiple things :
+#- a configuration directory ( @ref install/conf.d/ )
+#- a bootstraping script ( @ref install/loader.py )
+#- an utilities source code ( @ref install/lodel_admin.py )
+#- a Makefile that allow to run common instance operations (only refresh the dynamic code for now)

scripts/create_instance.sh

 
 echo -e "\nInstance successfully created in $instdir"
 echo -e "============================\n"
-echo "Now you should edit '$settings' and then run : cd $instdir && make dbinit"
+echo "Now you should edit files in '${instdir}/conf.d/' and then run : cd $instdir && make dyncode"