update readme

readme.md

@@ -14,9 +14,9 @@ A location picker powered by mapbox, implemented in React.
 - Autofill when user selects suggestion
 - Suggestions selectable with mouse click or with arrow key up/down + enter key
 - Callback when location is selected, providing the mapbox location object and click event if selected with mouse
-- Suggestions show/hide on input focus/blur
 - Custom selection color
 - Optional ISO 3166-1 country code prop to narrow search
+- Placeholder text set through prop for localization support
 
 ## Usage
 
@@ -42,3 +42,4 @@ import SearchBox from "react-mapbox-search";
 | country     | string   | undefined | ISO 3166-1 country code to narrow search       |
 | callback    | function | undefined | Callback function fired when suggestion chosen |
 | selectColor | string   | "#58A"    | Color for currently selected suggestion item   |
+| searchHint  | string   | "Search"  | Placeholder text for input when empty          |