Merge pull request #1431 from burnash/fix/readme

update readme examples

README.md

@@ -40,10 +40,10 @@ gc = gspread.service_account()
 wks = gc.open("Where is the money Lebowski?").sheet1
 
 # Update a range of cells using the top left corner address
-wks.update('A1', [[1, 2], [3, 4]])
+wks.update([[1, 2], [3, 4]], "A1")
 
 # Or update a single cell
-wks.update('B42', "it's down there somewhere, let me take another look.")
+wks.update_acell("B42", "it's down there somewhere, let me take another look.")
 
 # Format the header
 wks.format('A1:B1', {'textFormat': {'bold': True}})
@@ -261,10 +261,10 @@ cell_list = worksheet.findall(criteria_re)
 
 ```python
 # Update a single cell
-worksheet.update('B1', 'Bingo!')
+worksheet.update_acell('Bingo!', 'B1')
 
 # Update a range
-worksheet.update('A1:B2', [[1, 2], [3, 4]])
+worksheet.update([[1, 2], [3, 4]], 'A1:B2')
 
 # Update multiple ranges at once
 worksheet.batch_update([{