upate README to remove maxWidth props (FormidableLabs#667)

Author: ashika01

README.md

@@ -500,9 +500,7 @@ The slide tag represents each slide in the presentation. Giving a slide tag an `
 | align              | PropTypes.string | Accepts a space delimited value for positioning interior content. The first value can be `flex-start` (left), `center` (middle), or `flex-end` (right). The second value can be `flex-start` (top) , `center` (middle), or `flex-end` (bottom).                                              | `align="center center"`           |
 | controlColor       | PropTypes.string | Used to override color of control arrows on a per slide basis, accepts color aliases, or valid color values.                                                                                                                                                                                 | Set by `Deck`'s `control` prop    |
 | goTo               | PropTypes.number | Used to navigate to a slide for out-of-order presenting. Slide numbers start at `1`. This can also be used to skip slides as well.                                                                                                                                                           |                                   |
-| id                 | PropTypes.string | Used to create a string based hash.                                                                                                                                                                                                                                                          |                                   |
-| maxHeight          | PropTypes.number | Used to set max dimensions of the Slide.                                                                                                                                                                                                                                                     |                                   |
-| maxWidth           | PropTypes.number | Used to set max dimensions of the Slide.                                                                                                                                                                                                                                                     |                                   |
+| id                 | PropTypes.string | Used to create a string based hash.                                                                                                                                                                                                                                                          |
 | notes              | PropTypes.string | Text which will appear in the presenter mode. Can be HTML.                                                                                                                                                                                                                                   |                                   |
 | onActive           | PropTypes.func   | Optional function that is called with the slide index when the slide comes into view.                                                                                                                                                                                                        |                                   |
 | progressColor      | PropTypes.string | Used to override color of progress elements on a per slide basis, accepts color aliases, or valid color values.                                                                                                                                                                              | `quaternary` color set by theme   |