improve readme

Signed-off-by: Freyskeyd <simon.paitrault@gmail.com>

Author: Freyskeyd

Cargo.toml

@@ -1,9 +1,13 @@
 [package]
 name = "environment"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Freyskeyd <simon.paitrault@gmail.com>"]
 description = "Helper to deal with environment variables."
-license = "MIT"
-
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/Freyskeyd/environment.git"
+homepage = "https://github.com/Freyskeyd/environment"
+documentation = "http://docs.rs/environment/"
+readme = "README.md"
+keywords = ["environment", "env"]
 
 [dependencies]

README.md

@@ -0,0 +1,59 @@
+# Environment
+
+> **Handle environment variable context** - This crate helps you to deal with environment variables.
+
+[![Build Status](https://travis-ci.org/Freyskeyd/environment.svg)](https://travis-ci.org/Freyskeyd/environment) [![Documentation](https://img.shields.io/badge/docs-master-blue.svg)][Documentation]
+
+## Install
+
+Just add it to your `Cargo.toml`:
+
+```toml
+[dependencies]
+environment = "0.1"
+```
+
+## Example
+
+Here's a trivial example:
+
+```rust
+extern crate environment;
+
+use std::process::Command;
+
+fn main() {
+    let env = Environment::inherit().insert("foo", "bar");
+
+
+    let mut c = Command::new("printenv");
+
+    let output = c.env_clear()
+        .envs(env.compile())
+        .output()
+        .expect("failed to execute command");
+
+    let output = String::from_utf8_lossy(&output.stdout);
+
+    assert!(output.contains("foo=bar"));
+
+}
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual licensed as above, without any additional terms or
+conditions.
+
+[Documentation]: https://docs.rs/environment

src/lib.rs

@@ -125,7 +125,6 @@ where
 #[cfg(test)]
 mod test {
     use super::*;
-    use std::borrow::Cow;
     use std::process::Command;
 
     #[test]