Fix including grammar.json in gitignore (#143)

.gitignore

@@ -521,7 +521,5 @@ build/
 /bindings/c/*.h
 /bindings/c/tree-sitter-*.pc
 
-src/
+src/parser.c
-!src/scanner.c
+src/tree_sitter/
-!src/grammar.json
-!src/node-types.json

bindings/rust/build.rs

@@ -4,6 +4,9 @@ fn main() {
     let mut c_config = cc::Build::new();
     c_config.std("c11").include(src_dir);
 
+    #[cfg(target_env = "msvc")]
+    c_config.flag("-utf-8");
+
     let parser_path = src_dir.join("parser.c");
     c_config.file(&parser_path);
     println!("cargo:rerun-if-changed={}", parser_path.to_str().unwrap());