Add license info to Cargo.toml
name = "cryptocurrency"
version = "0.1.0"
authors = ["The Exonum Team <exonum@bitfury.com>"]
+repository = "https://github.com/exonum/cryptocurrency"
+readme = "README.md"
+license = "Apache-2.0"
[dependencies]
iron = "0.5.1"
