Update to latest hyper

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "webdriver"
-version = "0.8.0"
+version = "0.9.0"
 authors = ["Mozilla Tools and Automation <auto-tools@mozilla.com>"]
 description = "Library implementing the wire protocol for the W3C WebDriver specification."
 repository = "https://github.com/jgraham/webdriver-rust"
@@ -11,4 +11,4 @@ license = "MPL-2.0"
 log = "0.3.5"
 regex = "0.1.47"
 rustc-serialize = "0.3.16"
-hyper = {version = "0.8", default-features = false}
+hyper = {version = "0.9", default-features = false}