[#34] Remove remaining instances of OCDS specific 'release'

Author: Bjwebb

flattentool/json_input.py

@@ -1,6 +1,6 @@
 """
 
-This file contains code that takes an OCDS JSON release file as input (not a
+This file contains code that takes an instace of a JSON file as input (not a
 JSON schema, for that see schema.py).
 
 """

flattentool/output.py

@@ -21,7 +21,7 @@
 class SpreadsheetOutput(object):
     # output_name is given a default here, partly to help with tests,
     # but should have been defined by the time we get here.
-    def __init__(self, parser, main_sheet_name='main', output_name='release'):
+    def __init__(self, parser, main_sheet_name='main', output_name='unflattened'):
         self.parser = parser
         self.main_sheet_name = main_sheet_name
         self.output_name = output_name