prepare bigint for crates.io

ethkey/Cargo.toml

@@ -10,7 +10,7 @@ tiny-keccak = "1.0"
 eth-secp256k1 = { git = "https://github.com/ethcore/rust-secp256k1" }
 rustc-serialize = "0.3"
 docopt = { version = "0.6", optional = true }
-bigint = { path = "../util/bigint" }
+ethcore-bigint = { path = "../util/bigint" }
 
 [features]
 default = []

ethkey/src/lib.rs

@@ -20,7 +20,7 @@ extern crate lazy_static;
 extern crate tiny_keccak;
 extern crate secp256k1;
 extern crate rustc_serialize;
-extern crate bigint;
+extern crate ethcore_bigint as bigint;
 
 mod brain;
 mod error;