Detect encoding in Response::text() (#256)

* Detect encoding and decode text response

Fixes #246

* Try to get encoding from Content-Type header

* Remove uchardet encoding detection for now

* Add non utf-8 test case for Response::text()

* Reduce copies

Cargo.toml

@@ -11,6 +11,7 @@ categories = ["web-programming::http-client"]
 
 [dependencies]
 bytes = "0.4"
+encoding_rs = "0.7"
 futures = "0.1.15"
 hyper = "0.11.9"
 hyper-tls = "0.1.2"