Also exclude the test crate from packaging.

Author: emilio

Cargo.toml

@@ -16,7 +16,7 @@ documentation = "https://docs.rs/bindgen"
 version = "0.21.2"
 build = "build.rs"
 
-exclude = ["tests/headers", "tests/expectations"]
+exclude = ["tests/headers", "tests/expectations", "bindgen-integration"]
 
 [badges]
 travis-ci = { repository = "servo/rust-bindgen" }