Fix linter issues (docs) (#370)

middleware.go

@@ -12,7 +12,7 @@ type middleware interface {
 	Middleware(handler http.Handler) http.Handler
 }
 
-// MiddlewareFunc also implements the middleware interface.
+// Middleware also implements the middleware interface.
 func (mw MiddlewareFunc) Middleware(handler http.Handler) http.Handler {
 	return mw(handler)
 }

mux.go

@@ -13,7 +13,10 @@ import (
 )
 
 var (
+	// ErrMethodMismatch is returned when the error in the request does not match
+	// the method defined against the route.
 	ErrMethodMismatch = errors.New("method is not allowed")
+	// ErrNotFound is returned when no route match is found.
 	ErrNotFound = errors.New("no matching route was found")
 )
 
@@ -95,9 +98,9 @@ func (r *Router) Match(req *http.Request, match *RouteMatch) bool {
 		if r.MethodNotAllowedHandler != nil {
 			match.Handler = r.MethodNotAllowedHandler
 			return true
-		} else {
-			return false
 		}
+
+		return false
 	}
 
 	// Closest match for a router (includes sub-routers)

route.go

@@ -43,6 +43,8 @@ type Route struct {
 	buildVarsFunc BuildVarsFunc
 }
 
+// SkipClean bypasses cleaning the path, which includes removing duplicate
+// slashes and URL encoding.
 func (r *Route) SkipClean() bool {
 	return r.skipClean
 }