Optimize swagger

Signed-off-by: Asai Neko <sugar@sne.moe>

docs/swagger.json

@@ -1,8 +1,26 @@
 {
+    "schemes": [
+        "http",
+        "https"
+    ],
     "swagger": "2.0",
     "info": {
-        "contact": {}
+        "description": "API Docs based on Gin framework",
+        "title": "NixCN CMS API",
+        "termsOfService": "http://swagger.io/terms/",
+        "contact": {
+            "name": "API Support",
+            "url": "http://www.swagger.io/support",
+            "email": "support@swagger.io"
+        },
+        "license": {
+            "name": "Apache 2.0",
+            "url": "http://www.apache.org/licenses/LICENSE-2.0.html"
+        },
+        "version": "1.0"
     },
+    "host": "localhost:8000",
+    "basePath": "/api/v1",
     "paths": {
         "/auth/exchange": {
             "post": {