Update rocket to 0.3.16

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Changed
+- Upgrade rocket dependency to `0.3.16`
+
 ## [0.3.0]
 
 ### Added

Cargo.toml

@@ -26,9 +26,9 @@ lto = true
 
 [dependencies]
 
-rocket = "0.3.8"
-rocket_codegen = "0.3.8"
-rocket_contrib = "0.3.8"
+rocket = "0.3.16"
+rocket_codegen = "0.3.16"
+rocket_contrib = "0.3.16"
 serde = "1"
 serde_derive = "1"
 docopt = "0.8"

src/main.rs

-#![feature(plugin)]
+#![feature(plugin, decl_macro)]
 #![feature(alloc_system)]
 #![plugin(rocket_codegen)]