[add] support for CSS grid properties (experimental)

Allow people to experiment with using CSS grid in react-native. (No
support for shorthand properties.)

docs/components/View.md

@@ -186,7 +186,7 @@ Controls whether the View can be the target of touch events. The enhanced
 + `borderRightWidth`
 + `borderTopWidth`
 + `bottom`
-+ `boxShadow`
++ `boxShadow` ‡
 + `boxSizing`
 + `clip` ‡
 + `cursor` ‡
@@ -198,6 +198,18 @@ Controls whether the View can be the target of touch events. The enhanced
 + `flexGrow`
 + `flexShrink`
 + `flexWrap`
++ `gridAutoColumns` ‡
++ `gridAutoFlow` ‡
++ `gridAutoRows` ‡
++ `gridColumnEnd` ‡
++ `gridColumnGap` ‡
++ `gridColumnStart` ‡
++ `gridRowEnd` ‡
++ `gridRowGap` ‡
++ `gridRowStart` ‡
++ `gridTemplateColumns` ‡
++ `gridTemplateRows` ‡
++ `gridTemplateAreas` ‡
 + `height`
 + `justifyContent`
 + `left`
@@ -230,6 +242,10 @@ Controls whether the View can be the target of touch events. The enhanced
 + `perspectiveOrigin` ‡
 + `position`
 + `right`
++ `shadowColor`
++ `shadowOffset`
++ `shadowOpacity`
++ `shadowRadius`
 + `top`
 + `transform`
 + `transformOrigin` ‡

src/components/View/ViewStylePropTypes.js

@@ -18,7 +18,7 @@ module.exports = {
    * @platform unsupported
    */
   elevation: number,
-  /*
+  /**
    * @platform web
    */
   backgroundAttachment: string,

src/propTypes/LayoutPropTypes.js

@@ -14,7 +14,6 @@ const LayoutPropTypes = {
   ]),
   alignItems: oneOf(['baseline', 'center', 'flex-end', 'flex-start', 'stretch']),
   alignSelf: oneOf(['auto', 'baseline', 'center', 'flex-end', 'flex-start', 'stretch']),
-  aspectRatio: number,
   backfaceVisibility: hiddenOrVisible,
   borderWidth: numberOrString,
   borderBottomWidth: numberOrString,
@@ -61,7 +60,26 @@ const LayoutPropTypes = {
   top: numberOrString,
   visibility: hiddenOrVisible,
   width: numberOrString,
-  zIndex: number
+  zIndex: number,
+  /**
+   * @platform unsupported
+   */
+  aspectRatio: number,
+  /**
+   * @platform web
+   */
+  gridAutoColumns: string,
+  gridAutoFlow: string,
+  gridAutoRows: string,
+  gridColumnEnd: string,
+  gridColumnGap: string,
+  gridColumnStart: string,
+  gridRowEnd: string,
+  gridRowGap: string,
+  gridRowStart: string,
+  gridTemplateColumns: string,
+  gridTemplateRows: string,
+  gridTemplateAreas: string
 };
 
 module.exports = LayoutPropTypes;