Add scanner to bindings

binding.gyp

@@ -9,7 +9,7 @@
       "sources": [
         "bindings/node/binding.cc",
         "src/parser.c",
-        # If your language uses an external scanner, add it here.
+        "src/scanner.c",
       ],
       "cflags_c": [
         "-std=c99",

bindings/rust/build.rs

@@ -13,11 +13,9 @@ fn main() {
     // If your language uses an external scanner written in C,
     // then include this block of code:
 
-    /*
     let scanner_path = src_dir.join("scanner.c");
     c_config.file(&scanner_path);
     println!("cargo:rerun-if-changed={}", scanner_path.to_str().unwrap());
-    */
 
     c_config.compile("parser");
     println!("cargo:rerun-if-changed={}", parser_path.to_str().unwrap());