change interface so signEvent() returns the full event with pubkey, sig and id.

README.md

@@ -9,8 +9,8 @@ It provides a `window.nostr` object which has the following methods:
 
 ```
 async window.nostr.getPublicKey(): string // returns your public key as hex
-async window.nostr.signEvent(event): string // returns the signature as hex
-async window.nostr.getRelays(): {} // returns a list of relays
+async window.nostr.signEvent(event): Event // returns the full event object signed
+async window.nostr.getRelays(): { [url: string]: RelayPolicy } // returns a map of relays
 async window.nostr.nip04.encrypt(pubkey, plaintext): string // returns ciphertext+iv as specified in nip04
 async window.nostr.nip04.decrypt(pubkey, ciphertext): string // takes ciphertext+iv as specified in nip04
 ```

extension/background.js

@@ -66,11 +66,10 @@ async function handleContentScriptMessage({type, params, host}) {
 
         if (!event.pubkey) event.pubkey = getPublicKey(sk)
         if (!event.id) event.id = getEventHash(event)
-
         if (!validateEvent(event)) return {error: 'invalid event'}
 
-        let signature = await signEvent(event, sk)
-        return signature
+        event.sig = await signEvent(event, sk)
+        return event
       }
       case 'nip04.encrypt': {
         let {peer, plaintext} = params