As the async httpclient is almost certainly the first async example beginners will want to try, we OWE it to them to give them a real example.
Example repeated here for clarity:
```nim
import asyncdispatch, httpclient
proc asyncProc(): Future[string] {.async.} =
var client = newAsyncHttpClient()
return await client.getContent("http://example.com")
echo waitFor asyncProc()
```
This is my first Nim contribution, please let me know if the code is right. (it runs on my machine, but may not be the best example)