Update intros to better reflect the breadth of num

Closes #132.

Cargo.toml

@@ -9,8 +9,8 @@ repository = "https://github.com/rust-num/num"
 documentation = "http://rust-num.github.io/num"
 keywords = ["mathematics", "numerics"]
 description = """
-Simple numerics. This crate contains basic arbitrary-sized integer,
-rational, and complex types.
+A collection of numeric types and traits for Rust, including bigint,
+complex, rational, range iterators, generic integers, and more!
 """
 
 [dependencies]

README.md

@@ -1,6 +1,10 @@
 # num
 
-Arbitrary sized numeric types for Rust.
+A collection of numeric types and traits for Rust.
+
+This includes new types for big integers, rationals, and complex numbers,
+new traits for generic programming on numeric properties like `Integer,
+and generic range iterators.
 
 [Documentation](http://rust-num.github.io/num)
 
@@ -10,7 +14,7 @@ Add this to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-num = "*"
+num = "0.1"
 ```
 
 and this to your crate root:

src/lib.rs

@@ -8,9 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Simple numerics.
+//! A collection of numeric types and traits for Rust.
 //!
-//! This crate contains arbitrary-sized integer, rational, and complex types.
+//! This includes new types for big integers, rationals, and complex numbers,
+//! new traits for generic programming on numeric properties like `Integer`,
+//! and generic range iterators.
 //!
 //! ## Example
 //!