Minor correction to authorizationLevel description (#109)

Author: dacre-denny

README.md

@@ -188,7 +188,7 @@ Sets configuration options that will be used in all location requests.
 Supported options:
 
 * `skipPermissionRequests` (boolean, iOS-only) - Defaults to `false`. If `true`, you must request permissions before using Geolocation APIs.
-* `authorizationLevel` (string, iOS-only) - Either `"whenInUse"`, `"always"`, or `"auto"`. Changes the whether the user will be asked to give "always" or "when in use" location services permission. Any other value or `auto` will use the default behaviour, where the permission level is based on the contents of your `Info.plist`.
+* `authorizationLevel` (string, iOS-only) - Either `"whenInUse"`, `"always"`, or `"auto"`. Changes whether the user will be asked to give "always" or "when in use" location services permission. Any other value or `auto` will use the default behaviour, where the permission level is based on the contents of your `Info.plist`.
 
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