vendor dependencies with dep

vendor/github.com/go-chi/cors/README.md

@@ -0,0 +1,32 @@
+# CORS net/http middleware
+
+(fork of github.com/rs/cors)
+
+## Usage
+
+```go
+func main() {
+  r := chi.NewRouter()
+
+  // Basic CORS
+  // for more ideas, see: https://developer.github.com/v3/#cross-origin-resource-sharing
+  cors := cors.New(cors.Options{
+    // AllowedOrigins: []string{"https://foo.com"}, // Use this to allow specific origin hosts
+    AllowedOrigins:   []string{"*"},
+    // AllowOriginFunc:  func(r *http.Request, origin string) bool { return true },
+    AllowedMethods:   []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
+    AllowedHeaders:   []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
+    ExposedHeaders:   []string{"Link"},
+    AllowCredentials: true,
+    MaxAge:           300, // Maximum value not ignored by any of major browsers
+  })
+  r.Use(cors.Handler)
+  
+  r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+    w.Write([]byte("welcome"))
+  })
+  
+  http.ListenAndServe(":3000", r)
+}
+```
+