message: Bump tokio in example
diff: @@ -5,5 +5,5 @@ authors = ["Alexander Lyon <arlyon@me.com>"]
  edition = "2018"
  [dependencies]
  -tokio = "0.2"
  +tokio = {version = "1.2", features = ["rt-multi-thread", "macros"] }
  async-stripe = { path = "../../", features = ["runtime-tokio-hyper"] }
  