update docs for 2.6

Author: yyx990803

docs/en/SUMMARY.md

@@ -23,9 +23,19 @@
   - [Scroll Behavior](advanced/scroll-behavior.md)
   - [Lazy Loading](advanced/lazy-loading.md)
 - API Reference
-  - [router-link](api/router-link.md)
-  - [router-view](api/router-view.md)
-  - [The Route Object](api/route-object.md)
   - [Router Constructor Options](api/options.md)
+    - [routes](api/options.md#routes)
+    - [mode](api/options.md#mode)
+    - [base](api/options.md#base)
+    - [linkActiveClass](api/options.md#linkactiveclass)
+    - [linkExactActiveClass](api/options.md#linkexactactiveclass)
+    - [scrollBehavior](api/options.md#scrollbehavior)
+    - [parseQuery / stringifyQuery](api/options.md#parsequery--stringifyquery)
+    - [fallback](api/options.md#fallback)
   - [Router Instance](api/router-instance.md)
+    - [Properties](api/router-instance.md#properties)
+    - [Methods](api/router-instance.md#methods)
+  - [The Route Object](api/route-object.md)
   - [Component Injections](api/component-injections.md)
+  - [router-link](api/router-link.md)
+  - [router-view](api/router-view.md)

docs/en/advanced/scroll-behavior.md

@@ -20,7 +20,7 @@ The `scrollBehavior` function receives the `to` and `from` route objects. The th
 The function can return a scroll position object. The object could be in the form of:
 
 - `{ x: number, y: number }`
-- `{ selector: string }`
+- `{ selector: string, offset? : { x: number, y: number }}` (offset only supported in 2.6.0+)
 
 If a falsy value or an empty object is returned, no scrolling will happen.
 
@@ -53,6 +53,7 @@ scrollBehavior (to, from, savedPosition) {
   if (to.hash) {
     return {
       selector: to.hash
+      // , offset: { x: 0, y: 10 }
     }
   }
 }

docs/en/api/options.md

@@ -18,6 +18,10 @@
     children?: Array<RouteConfig>; // for nested routes
     beforeEnter?: (to: Route, from: Route, next: Function) => void;
     meta?: any;
+
+    // 2.6.0+
+    caseSensitive?: boolean; // use case sensitive match? (default: false)
+    pathToRegexpOptions?: Object; // path-to-regexp options for compiling regex
   }
   ```
 
@@ -86,3 +90,13 @@
 - type: `Function`
 
   Provide custom query string parse / stringify functions. Overrides the default.
+
+### fallback
+
+> 2.6.0+
+
+- type: `boolean`
+
+  Controls whether the router should fallback to `hash` mode when the browser does not support `history.pushState`. Defaults to `true`.
+
+  Setting this to `false` essentially makes every `router-link` navigation a full page refresh in IE9. This is useful when the app is server-rendered and needs to work in IE9, because a hash mode URL does not work with SSR.