diff --git a/.gitignore b/.gitignore
index c4e5be2..2dac7cd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .build
 Packages
 Xcode
+Sources/main.swift
\ No newline at end of file
diff --git a/README.md b/README.md
index c53ba3f..d591165 100644
--- a/README.md
+++ b/README.md
@@ -139,9 +139,69 @@ app.use { req, res, next in
 We are using S4.Request and S4.Response
 See more detail, please visit https://github.com/open-swift/S4
 
+## Static Files/Assets
 
-## Session/Cookie
-Getting ready
+Just register the `Slimane.Static()` into middleware chains
+
+```swift
+app.use(Slimane.Static(root: "/path/to/your/public"))
+```
+
+## Cookie
+
+#### request.cookie: `Set<Cookie>`
+
+request.cookies is Readonly.
+```swift
+req.cookies["session-id"]
+```
+
+**Cookie** is declared in S4. See more to visit https://github.com/open-swift/S4
+
+#### response.cookies: `Set<AttributedCookie>`
+
+response.cookies is Writable.
+
+```swift
+let setCookie = AttributedCookie(....)
+res.cookies = Set<setCookie>
+```
+**AttributedCookie** is declared in S4. See more to visit https://github.com/open-swift/S4
+
+
+## Session
+
+Register SessionMiddleware into the middleware chains.
+See more detail for SessionMiddleware to visit https://github.com/slimane-swift/SessionMiddleware
+
+```swift
+import Slimane
+import SessionMiddleware
+
+let app = Slimane()
+
+// SessionConfig
+let sesConf = SessionConfig(
+    secret: "my-secret-value",
+    expires: 180,
+    HTTPOnly: true
+)
+
+// Enable to use session in Slimane
+app.use(SessionMiddleware(conf: sesConf))
+
+app.get("/") { req, responder
+    // set data into the session
+    req.session["foo"] = "bar"
+
+    req.session.id // show session id
+
+    responder {
+        Response()
+    }
+}
+
+```
 
 ## Body Data
 
diff --git a/Sources/Slimane+Static.swift b/Sources/Slimane+Static.swift
new file mode 100644
index 0000000..05e98f9
--- /dev/null
+++ b/Sources/Slimane+Static.swift
@@ -0,0 +1,35 @@
+//
+//  Static.swift
+//  Slimane
+//
+//  Created by Yuki Takei on 4/19/16.
+//
+//
+
+extension Slimane {
+    public struct Static: MiddlewareType {
+        let root: String
+        
+        public init(root: String){
+            self.root = root
+        }
+        
+        public func respond(req: Request, res: Response, next: MiddlewareChain) {
+            guard let path = req.path , ext = path.split(by: ".").last, mediaType = mediaTypeForFileExtension(ext) else {
+                return next(.Chain(req, res))
+            }
+            
+            FS.readFile(root + path) {
+                switch($0) {
+                case .Success(let buffer):
+                    var res = res
+                    res.contentType = mediaType
+                    res.body = .buffer(buffer.data)
+                    next(.Chain(req, res))
+                case .Error(let error):
+                    next(.Error(Error.ResourceNotFound("\(path) is not found")))
+                }
+            }
+        }
+    }
+}
diff --git a/Sources/Slimane.swift b/Sources/Slimane.swift
index 9ece40f..88f502d 100644
--- a/Sources/Slimane.swift
+++ b/Sources/Slimane.swift
@@ -32,26 +32,26 @@ public class Slimane {
     }
     
     internal func dispatch(request: Request, stream: Skelton.HTTPStream){
-        var request = request
-        let responder: AsyncResponder
-        if let route = self.router.match(request) {
-            request.params = route.params(request)
-            responder = BasicAsyncResponder { request, result in
-                if request.isIntercepted {
-                    result {
-                        request.response
-                    }
-                    return
+        let responder = BasicAsyncResponder { [unowned self] request, result in
+            if request.isIntercepted {
+                result {
+                    request.response
                 }
-                route.handler.respond(to: request) { chainedResponse in
+                return
+            }
+            
+            if let route = self.router.match(request) {
+                var request = request
+                request.params = route.params(request)
+                route.handler.respond(to: request) { response in
                     result {
-                        request.response.merged(try chainedResponse())
+                        request.response.merged(try response())
                     }
                 }
-            }
-        } else {
-            responder = BasicAsyncResponder { [unowned self] _, result in
-                self.handleError(Error.RouteNotFound(path: request.uri.path ?? "/"), request, stream)
+            } else {
+                result {
+                    self.errorHandler(Error.RouteNotFound(path: request.uri.path ?? "/"))
+                }
             }
         }