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Update README.md

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Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>
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@ -34,14 +34,45 @@ gzip -d *.gz
## Convert the data into numpy files
### [numpy.dtype.newbyteorder](https://numpy.org/doc/stable/reference/generated/numpy.dtype.newbyteorder.html)
```python
type.newbyteorder(new_order='S', /)
```
> Return a new dtype with a different byte order.
>
> Changes are also made in all fields and sub-arrays of the data type.
>
> **new_order** : string, optional
>
> Byte order to force; a value from the byte order specifications below. The default value (‘S’) results in swapping the current byte order. new_order codes can be any of:
>
> ‘S’ - swap dtype from current to opposite endian
>
> {‘<’, ‘little’} - little endian
>
> {‘>’, ‘big’} - big endian
>
> {‘=’, ‘native’} - native order
>
> {‘\|’, ‘I’} - ignore (no change to byte order)
>
### Label file structure
> [offset] [type] [value] [description]
>
> 0000 32 bit integer 0x00000801(2049) magic number (MSB first)
>
> 0004 32 bit integer 60000 number of items
>
> 0008 unsigned byte ?? label
>
> 0009 unsigned byte ?? label
>
> ........
>
> xxxx unsigned byte ?? label
The labels values are 0 to 9.
@ -49,13 +80,21 @@ The labels values are 0 to 9.
### Pattern file structure
> [offset] [type] [value] [description]
>
> 0000 32 bit integer 0x00000803(2051) magic number
>
> 0004 32 bit integer 60000 number of images
>
> 0008 32 bit integer 28 number of rows
>
> 0012 32 bit integer 28 number of columns
>
> 0016 unsigned byte ?? pixel
>
> 0017 unsigned byte ?? pixel
>
> ........
>
> xxxx unsigned byte ?? pixel
Pixels are organized row-wise.