make main pub in sample code

Author: iamcodemaker

README.md

@@ -62,7 +62,7 @@ cfg_if! {
 }
 
 #[wasm_bindgen]
-fn main() {
+pub fn main() {
     init_log();
     // ...
 }

src/lib.rs

@@ -63,7 +63,7 @@
 //! }
 //! 
 //! #[wasm_bindgen]
-//! fn main() {
+//! pub fn main() {
 //!     init_log();
 //!     // ...
 //! }