ENH: DataFrame.style option for hiding the index
#### Code Sample, a copy-pastable example if possible

``` python
df = pd.DataFrame(np.random.randn(10, 2))
df.style.set_include_index(False)  # name TBD
```
#### Expected Output

Same output, but without the index

Would maybe want a way to hide the columns too.

---

Current workaround

``` python
df = pd.DataFrame(np.random.randn(10, 2))
df.style.set_table_styles([
    {'selector': '.row_heading, .blank', 'props': [('display', 'none;')]}
])
```

This doesn't work if there's a `df.index.name` and almost surely doesn't work with MultiIndexes.
