Merge pull request #616 from orbitdb/feat/await-note

docs: Add await comment

README.md

@@ -142,6 +142,7 @@ const ipfs = IpfsClient('localhost', '5001')
 const orbitdb = await OrbitDB.createInstance(ipfs)
 const db = await orbitdb.log('hello')
 // Do something with your db.
+// Of course, you may want to wrap these in an async function.
 ```
 
 ## API