Kata 介绍
Kata 是一个 JavaScript 模板引擎。包括：Template blocks, Interpolate blocks, Iterate
blocks, Conditional blocks, Else/Elseif blocks, Invoke blocks, Yield blocks,
Import blocks, Evaluate blocks, and Plugin blocks.
示例代码：
var kata = require('kata');
var fs = require('fs');
fs.readFile('template.kata', {encoding: 'utf8'}, function(err, src){
var template;
if (err) return;
template = kata(src);
console.log(template({greeting: 'Hello', name: 'World'}));
});