Rename num_macros to num-macros

Cargo.toml

@@ -17,6 +17,5 @@ rational, and complex types.
 rustc-serialize = "0.3.13"
 rand = "0.3.8"
 
-[dev-dependencies.num_macros]
-path = "num_macros/"
-version = "0.1.22"
+[dev-dependencies]
+num-macros = { path = "num-macros", version = "0.1.22" }

num_macros/Cargo.toml → num-macros/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "num_macros"
+name = "num-macros"
 version = "0.1.22"
 authors = ["The Rust Project Developers"]
 license = "MIT/Apache-2.0"