add vendor

vendor/github.com/gin-gonic/contrib/jwt/jwt.go

@@ -0,0 +1,20 @@
+package jwt
+
+import (
+	jwt_lib "github.com/dgrijalva/jwt-go"
+	"github.com/dgrijalva/jwt-go/request"
+	"github.com/gin-gonic/gin"
+)
+
+func Auth(secret string) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		_, err := request.ParseFromRequest(c.Request, request.OAuth2Extractor, func(token *jwt_lib.Token) (interface{}, error) {
+			b := ([]byte(secret))
+			return b, nil
+		})
+
+		if err != nil {
+			c.AbortWithError(401, err)
+		}
+	}
+}