docs: Expand project metadata

Author: epage

Cargo.toml

@@ -7,7 +7,11 @@ license = "MIT/Apache-2.0"
 repository = "https://github.com/steveklabnik/dir-diff"
 documentation = "https://docs.rs/crate/dir-diff"
 readme = "README.md"
-tags = ["directory", "diff", "fs"]
+keywords = ["directory", "diff", "fs"]
+categories = ["filesystem", "development-tools::testing"]
+
+[badges]
+travis-ci = { repository = "steveklabnik/dir-diff" }
 
 [dependencies]
 walkdir = "2.0.1"

README.md

@@ -3,11 +3,12 @@
 Are the contents of two directories different?
 
 [![Build Status](https://travis-ci.org/steveklabnik/dir-diff.svg?branch=master)](https://travis-ci.org/steveklabnik/dir-diff)
+[![Crates Status](https://img.shields.io/crates/v/dir-diff.svg)](https://crates.io/crates/dir-diff)
 
 Mostly useful for integration-style tests when you want to check some generated
 output.
 
-## Usage
+## Example
 
 Using `dir-diff` in an integration test with [`tempdir`]: