primitives library is exported

Author: sgkim126

Cargo.lock

@@ -13,7 +13,7 @@ iron = "*"
 jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc.git", branch = "parity-1.11" }
 log = "0.4.1"
 postgres = { version = "0.15", features = ["with-chrono"] }
-primitives = { git = "https://github.com/CodeChain-io/codechain.git", rev = "7cd80ce55f25513e1b4b60f2e148eb9641c3ee51" }
+primitives = { git = "https://github.com/CodeChain-io/rust-codechain-primitives.git", version = "0.4.0" }
 rand = "0.5.5"
 serde = "1.0"
 serde_derive = "1.0"