Start to think on api

converter now return a tuple:
the converted file and potential other resources in a dict

converters/template.py

@@ -147,7 +147,12 b' class ConverterTemplate(Configurable):'
         return converted_cells
 
     def convert(self, cell_separator='\n'):
-        return self.template.render(worksheets=self.process(), inlining=inlining)
+        """ convert the ipynb file
+
+        return both the converted ipynb file and a dict containing potential
+        other resources
+        """
+        return self.template.render(worksheets=self.process(), inlining=inlining),{}
 
 
     def read(self, filename):

runme.py

@@ -8,4 +8,6 b' from converters.template import *'
 C = ConverterTemplate(tplfile=sys.argv[1])
 C.read(sys.argv[2])
 
-print(C.convert().encode('utf-8'))
+output,rest = C.convert()
+
+print(output.encode('utf-8'))