Add /v2/vendors.

v2/vendors.js

@@ -0,0 +1,84 @@
+// Bulk-expanded endpoint that provides localized vendor data. Note
+// that "vendors" in GW2 aren't NPCs -- they're simply the inventories
+// that are presented for sale when a shop window opens up.
+//
+// Correlation between NPCs and vendors is left for a future release,
+// but gizmo-type items that open a vendor window should have a 
+// details.vendors field with an array of vendor ids.
+
+// GET /v2/vendors
+
+[ 1, 2, 3, /* ... */ ]
+
+// GET /v2/vendors/1
+// GET /v2/vendors?id=1
+
+
+// GET /v2/vendors?page_size=2&page=0
+// GET /v2/vendors?ids=69,258
+
+
+[
+  {
+    "id": 69,
+    "tabs": [
+      {
+        "name": "",
+        "purchase_limit": 1,
+        "items": [
+          {
+            "id": 73141,
+            "count": 1,
+            "costs": []
+          },
+          /* ... */
+        ]
+      },
+      /* ... */
+    ]
+  },
+  {
+    "id": 258,
+    "tabs": [
+      {
+        "name": "Material",
+        "items": [
+          {
+            "id": 62942,
+            "count": 1,
+            "costs": [
+              {
+                "currency_id": 1,
+                "count": 8
+              }
+            ]
+          },
+          {
+            "id": 19704,
+            "count": 10,
+            "costs": [
+              {
+                "item_id" : 62942,
+                "count": 1
+              }
+            ]
+          }
+          /* ... */
+        ]
+      },
+      /* ... */
+    ]
+  }
+]
+
+// NOTES:
+// * purchase_limit is the total number of items that may be purchased
+//   per day from this tab.
+// * items[n].costs may be empty; this means the item is free.
+// * items[n].costs.currency_id refers to /v2/currencies.
+// * items[n].costs.item_id may be set if the vendor's price is by item
+//   rather than currency (e.g., for the guild decoration vendor). It refers
+//   to /v2/items.
+// * Vendors that have a rotating inventory (e.g., fractal reliquary) are
+//   displayed with the current stock (+/- 5 minutes). In those cases, the
+//   stock updates daily and is totally random.