Update variables include template

docs/_data/variables/grid/_all.json

@@ -0,0 +1,5 @@
+{
+  "by_name": {},
+  "list": [],
+  "file_path": "grid/_all.sass"
+}

docs/_data/variables/grid/columns.json

@@ -1,15 +1,13 @@
 {
-  "dir_name": "grid",
-  "file_name": "columns",
-  "file_relative_path": "grid/columns.sass",
-  "file_line_from": 1,
-  "file_line_to": 1,
-  "file_url": "https://github.com/jgthms/bulma/blob/master/sass/grid/columns.sass#L1,L1",
-  "vars": {
-    "column-gap": {
-      "id": "column-gap",
+  "by_name": {
+    "$column-gap": {
       "name": "$column-gap",
-      "value": "0.75rem"
+      "value": "0.75rem",
+      "type": "size"
     }
-  }
+  },
+  "list": [
+    "$column-gap"
+  ],
+  "file_path": "grid/columns.sass"
 }

docs/_data/variables/grid/tiles.json

@@ -0,0 +1,5 @@
+{
+  "by_name": {},
+  "list": [],
+  "file_path": "grid/tiles.sass"
+}