Make semicov work without using semicolons

From the homepage:

> So, basically it should work very well for any code passed following jslint validations:
> - semicolons

I think it's necessary to make semicov work with code without semicolons, because most Node.js coders don't use semicolons.

I don't use them either.

Some of the reasons:
- https://npmjs.org/doc/coding-style.html
- http://mislav.uniqpath.com/2010/05/semicolons/

Are there any technical limitations?

檢查 semicov 的程式碼庫，以了解它目前如何解析 JavaScript 並依賴分號。查看主要的解析邏輯和測試套件，了解沒有分號時哪些功能會失效。目標是修改該工具以正確處理自動分號插入（ASI）。一個很好的起點是專案的 README 以及任何用於涵蓋率分析的現有測試。

由索引模型根據 Issue 內容生成。