docs: add README.md

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 authors = ["PoiScript <poiscript@gmail.com>"]
 description = "A Rust library for parsing orgmode files."
 repository = "https://github.com/PoiScript/orgize"
+readme = "README.md"
 license = "MIT"
 keywords = ["orgmode","emacs","parser"]
 

README.md

@@ -0,0 +1,48 @@
+# Orgize
+
+Orgize is a Emacs Org-mode parser written by pure Rust. It behaves like a pull
+parser (returning an iterator of events) but not exactly.
+
+Besides, orgize also provides some mechanism for exporting org-mode files to
+various formats, e.g. HTML.
+
+## Usage
+
+```toml
+[dependencies]
+orgize = "0.1.0"
+```
+
+```rust
+// Rust 2015 only
+extern crate orgize;
+```
+
+## Example
+
+```rust
+use orgize::Parser;
+
+fn main() {
+    let parser = Parser::new(
+        r#"* Title 1
+*Section 1*
+** Title 2
+_Section 2_
+* Title 3
+/Section 3/
+* Title 4
+=Section 4="#,
+    );
+
+    for event in parser {
+        // handling the event
+    }
+}
+```
+
+Alternatively, you can use the built-in render.
+
+## License
+
+MIT