Ignore serde2/Cargo.lock in git

.gitignore

@@ -1,2 +1,3 @@
 /target/
 /Cargo.lock
+/serde2/Cargo.lock

serde2/Cargo.lock

@@ -1,17 +0,0 @@
-[root]
-name = "serde2"
-version = "0.1.0"
-dependencies = [
- "rustc-serialize 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde2_macros 0.1.0",
-]
-
-[[package]]
-name = "rustc-serialize"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "serde2_macros"
-version = "0.1.0"
-