Switch to num-traits

[andersk@mit.edu: Also use num_traits in the documentation rather than
the reexport.]

Closes andersk#6, closes andersk#8.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Author: Ms2ger

Cargo.toml

@@ -9,6 +9,6 @@ repository = "https://github.com/andersk/enum_primitive-rs.git"
 homepage = "https://github.com/andersk/enum_primitive-rs"
 readme = "README.md"
 
-[dependencies.num]
-version = "*"
+[dependencies.num-traits]
+version = "0.1.32"
 default-features = false

src/lib.rs

@@ -32,8 +32,8 @@
 //!
 //! ```
 //! #[macro_use] extern crate enum_primitive;
-//! extern crate num;
-//! use num::FromPrimitive;
+//! extern crate num_traits;
+//! use num_traits::FromPrimitive;
 //!
 //! enum_from_primitive! {
 //! #[derive(Debug, PartialEq)]
@@ -53,10 +53,10 @@
 //! ```
 
 
-extern crate num;
+extern crate num_traits;
 
 pub use std::option::Option;
-pub use num::FromPrimitive;
+pub use num_traits::FromPrimitive;
 
 /// Helper macro for internal use by `enum_from_primitive!`.
 #[macro_export]