add readme and test

Author: zhuqiacheng

README.md

@@ -122,6 +122,22 @@ require("html?interpolate!./file.html");
 ```html
 <img src="${require(`./images/gallery.png`)}">
 
+<div>${require('./components/gallery.html')}</div>
+```
+And if you only want to use `require` in template and any other `${}` are not to be translate you can set `interpolate` flag to `require`, like so:
+
+```js
+require("html?interpolate=require!./file.ftl");
+```
+
+```html
+
+<#list list as list>
+  <a href="${list.href!}" />${list.name}</a>
+</#list>
+
+<img src="${require(`./images/gallery.png`)}">
+
 <div>${require('./components/gallery.html')}</div>
 ```
 

test/loaderTest.js

@@ -119,4 +119,11 @@ describe("loader", function() {
 			'module.exports = "<img src=\\"" + ("Hello " + (1 + 1)) + "\\">";'
 		);
 	});
+	it("should enable interpolations when using interpolate=require flag and only require function to be translate", function() {
+		loader.call({
+			query: "?interpolate=require"
+		}, '<a href="${list.href}"><img src="${require(\'./test.jpg\')}" />').should.be.eql(
+			'module.exports = "<a href="${list.href}"><img src=\\"" + require(\'./test.jpg\') + "\\">";'
+		);
+	});
 });