message: changed docs so container is not saved to db
diff: @@ -335,7 +335,7 @@ Through the API's call containers.create(), you can create simple grid container
  .. testcode:: containers_custom
  - containers.create(
  + custom_plate = containers.create(
  '3x6_plate', # name of you container
  grid=(3, 6), # specify amount of (columns, rows)
  spacing=(12, 12), # distances (mm) between each (column, row)
  @@ -344,12 +344,10 @@ Through the API's call containers.create(), you can create simple grid container
  volume=200, # optional: volume capacity of each well (uL)
  save=False)
  -When you create your custom container, then it will be saved for later use under the name you've given it. This means you can use containers.load() to use the custom container you've created in this and any future protocol.
  +When you create your custom container it will return the custom plate. If you would like to save this container to the robot's containers library you can pass save=True and it will be saved for later use under the name you've given it. This means you can use containers.load() to use the custom container you've created in this and any future protocol.
  .. testcode:: containers_custom
  - custom_plate = containers.load('3x6_plate', 'D1')
  -
  for well in custom_plate.wells():
  print(well)
  