add readme

README.md

@@ -0,0 +1,18 @@
+This is epub parse library for rust.
+
+Now it is in development.
+
+## Usage
+```rust
+use std::fs::File;
+
+use eparser::book::parse_book;
+use eparser::file::local::read_from_file;
+
+fn main() {
+    let file = File::open("./res/example.epub").unwrap();
+    let files = read_from_file(file).unwrap();
+    let book = parse_book(files).unwrap();
+    println!("{:?}", book);
+}
+```

example/.gitignore

@@ -1 +1,2 @@
-/target
+/target
+/res