add readme

README.md

@@ -0,0 +1,30 @@
+Unicode character composition and decomposition utilities
+as described in
+[Unicode Standard Annex #15](http://www.unicode.org/reports/tr15/).
+
+[![Build Status](https://travis-ci.org/unicode-rs/unicode-normalization.svg)](https://travis-ci.org/unicode-rs/unicode-normalization)
+
+```rust
+extern crate unicode_normalization;
+
+use unicode_normalization::char::compose;
+use unicode_normalization::str::UnicodeNormalization;
+
+fn main() {
+    assert_eq!(compose('A','\u{30a}'), Some('Å'));
+    
+    let s = "ÅΩ";
+    let c = UnicodeNormalization::nfc_chars(s).collect::<String>();
+    assert_eq!(c, "ÅΩ");
+}
+```
+
+# crates.io
+
+You can use this package in your project by adding the following
+to your `Cargo.toml`:
+
+```toml
+[dependencies]
+unicode-normalization = "0.0.1"
+```