adhere to lnurlp spec better

lib/lnurl.js

@@ -10,6 +10,9 @@ export function lnurlPayMetadataString (username) {
   return JSON.stringify([[
     'text/plain',
     `Funding @${username} on stacker.news`
+  ], [
+    'text/identifier',
+    `${username}@stacker.news`
   ]])
 }
 

pages/api/lnurlp/[username]/pay.js

@@ -32,7 +32,8 @@ export default async ({ query: { username, amount } }, res) => {
         ${expiresAt}, ${Number(amount)}, ${user.id})`)
 
     return res.status(200).json({
-      pr: invoice.request
+      pr: invoice.request,
+      routes: []
     })
   } catch (error) {
     console.log(error)