Remove unnecessary quotes when using when using fat arrow attributes binding. 

So i think this is alot cleaner:

Current Way:
```ts
/** @VueLiteralCompiler Template */
const template = app => `
   <button @click="${ app.doSomething() }"></button>
`;
```
Proposed Way:
```ts
/** @VueLiteralCompiler Template */
const template = app => `
   <button @click=${ app.doSomething() }></button>
`;
```