[OK] Expose port (#127)

* Added the 'expose' function to ContainerOptionBuilder impl. (Closes #73, Replaces #74)

* Forgot the , nevermind :ok_hand:

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index e3a848c..ba807a0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -29,6 +29,7 @@ extern crate url;
 #[macro_use]
 extern crate serde_derive;
 extern crate serde;
+#[macro_use]
 extern crate serde_json;
 extern crate tokio;