Git pull request方法

1.fork
2.修改
3.执行pr

Fixes #.

• 更改文件TinyScript/js/src/lexer/Lexer.js，修复单行测试

if(lookahead == '/') {
  while(it.hasNext() && (c = it.next()) != '\n');
  continue;
}

• 增加一个测试用例TinyScript/js/src/tests/Lexer.test.js

it("delete one line comment", () => {
  const lexer = new Lexer()
  const source = "//adnwjdbakd\na=1"
  const tokens = lexer.analyse(arrayToGenerator([...source]))
  assert.equal(tokens.length, 3)
})