Fix indentation

Author: dnerini

pysteps/io/interface.py

@@ -47,6 +47,8 @@ def get_method(name, type):
             return importers.import_fmi_pgm
         elif name.lower() == "mch_gif":
             return importers.import_mch_gif
+        elif name.lower() == "mch_metranet":
+            return importers._import_mch_metranet
         elif name.lower() == "odim_hdf5":
             return importers.import_odim_hdf5
         else:
@@ -55,7 +57,7 @@ def get_method(name, type):
     elif type.lower() == "exporter":
         if name.lower() == "netcdf":
             return exporters.initialize_forecast_exporter_netcdf
-                else:
+        else:
             raise ValueError("unknown exporter method %s" % name)