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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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@ -783,6 +783,43 @@ E 0.243193
Name: Alpha, dtype: float64
```
### Order
Replace the index:​
```python
New_Data = pandas.DataFrame(Data, index=New_Index)​
```
Reorder the columns:​
```python
New_Data = pandas.DataFrame(Data, ​columns = ["ColumnName2", “ColumnName3", "ColumnName1"])​
```
Reorder index and columns:
```python
New_Data = Data.reindex(index=[0, 2, 4, 6, 8, 10, 12, 1, 3, 5, 7, 9, 11], ​columns=['ColumnName2', 'ColumnName3', 'ColumnName1'])​
```
Reorder index and columns but inplace (i.e. no new variable):​
```python
Data.reindex(index=[0, 2, 4, 6, 8, 10, 12, 1, 3, 5, 7, 9, 11], columns=['ColumnName2', 'ColumnName3', 'ColumnName1'],​ inplace=True)​
```
More index shenanigans:
```python
New_Data = pandas.DataFrame(Data, ​columns = ["ColumnName2", “ColumnName3"], ​index=Data["ColumnName1"])
New_Data = Data.set_index("ColumnName1")
```
```python
Data.set_index("ColumnName1", inplace=True)​
```
## Saving (pandas.DataFrame.to_pickle) / loading (pandas.read_pickle) data ‘natively’​
Save: