auth/jwt: minor doc update

auth/jwt/README.md

@@ -13,7 +13,7 @@ will be added to the context via the `jwt.JWTClaimsContextKey`.
 ```go
 import (
 	stdjwt "github.com/dgrijalva/jwt-go"
-	
+
 	"github.com/go-kit/kit/auth/jwt"
 	"github.com/go-kit/kit/endpoint"
 )
@@ -23,7 +23,7 @@ func main() {
 	{
 		kf := func(token *stdjwt.Token) (interface{}, error) { return []byte("SigningString"), nil }
 		exampleEndpoint = MakeExampleEndpoint(service)
-		exampleEndpoint = jwt.NewParser(kf, stdjwt.SigningMethodHS256)(exampleEndpoint)
+		exampleEndpoint = jwt.NewParser(kf, stdjwt.SigningMethodHS256, jwt.StandardClaimsFactory)(exampleEndpoint)
 	}
 }
 ```
@@ -35,7 +35,7 @@ the token string and add it to the context via the `jwt.JWTTokenContextKey`.
 ```go
 import (
 	stdjwt "github.com/dgrijalva/jwt-go"
-	
+
 	"github.com/go-kit/kit/auth/jwt"
 	"github.com/go-kit/kit/endpoint"
 )
@@ -45,9 +45,9 @@ func main() {
 	{
 		exampleEndpoint = grpctransport.NewClient(...).Endpoint()
 		exampleEndpoint = jwt.NewSigner(
-			"kid-header", 
-			[]byte("SigningString"), 
-			stdjwt.SigningMethodHS256, 
+			"kid-header",
+			[]byte("SigningString"),
+			stdjwt.SigningMethodHS256,
 			jwt.Claims{},
 		)(exampleEndpoint)
 	}
@@ -67,7 +67,7 @@ Example of use in a client:
 import (
 	stdjwt "github.com/dgrijalva/jwt-go"
 
-	grpctransport "github.com/go-kit/kit/transport/grpc"	
+	grpctransport "github.com/go-kit/kit/transport/grpc"
 	"github.com/go-kit/kit/auth/jwt"
 	"github.com/go-kit/kit/endpoint"
 )

auth/jwt/middleware.go

@@ -70,21 +70,21 @@ func NewSigner(kid string, key []byte, method jwt.SigningMethod, claims jwt.Clai
 // Useful in NewParser middleware.
 type ClaimsFactory func() jwt.Claims
 
-// MapClaimsFactory is a ClaimsFactory that returns 
+// MapClaimsFactory is a ClaimsFactory that returns
 // an empty jwt.MapClaims.
 func MapClaimsFactory() jwt.Claims {
-    return jwt.MapClaims{}
+	return jwt.MapClaims{}
 }
 
-// StandardClaimsFactory is a ClaimsFactory that returns 
+// StandardClaimsFactory is a ClaimsFactory that returns
 // an empty jwt.StandardClaims.
 func StandardClaimsFactory() jwt.Claims {
-    return &jwt.StandardClaims{}
+	return &jwt.StandardClaims{}
 }
 
 // NewParser creates a new JWT token parsing middleware, specifying a
 // jwt.Keyfunc interface, the signing method and the claims type to be used. NewParser
-// adds the resulting  claims to endpoint context or returns error on invalid token.
+// adds the resulting claims to endpoint context or returns error on invalid token.
 // Particularly useful for servers.
 func NewParser(keyFunc jwt.Keyfunc, method jwt.SigningMethod, newClaims ClaimsFactory) endpoint.Middleware {
 	return func(next endpoint.Endpoint) endpoint.Endpoint {