Chinese translation for CoffeeScript

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+---
+language: coffeescript
+contributors:
+  - ["Tenor Biel", "http://github.com/L8D"]
+  - ["Xavier Yao"], "http://github.com/xavieryao"]
+translators:
+  - ["Xavier Yao"], "http://github.com/xavieryao"]
+filename: coffeescript-cn.coffee
+lang: zh-cn
+---
+
+CoffeeScript是逐句编译为JavaScript的一种小型语言，且没有运行时的解释器。
+作为JavaScript的替代品之一，CoffeeScript旨在编译人类可读、美观优雅且速度不输原生的代码，
+且编译后的代码可以在任何JavaScript运行时正确运行。
+
+参阅 [CoffeeScript官方网站](http://coffeescript.org/)以获取CoffeeScript的完整教程。
+
+``` coffeescript
+# CoffeeScript是一种很潮的编程语言，
+# 它紧随众多现代编程语言的趋势。
+# 因此正如Ruby和Python，CoffeeScript使用井号标记注释。
+
+###
+大段落注释以此为例，可以被直接编译为 '/ *' 和 '* /' 包裹的JavaScript代码。
+
+在继续之前你需要了解JavaScript的基本概念。
+
+示例中 => 后为编译后的JavaScript代码
+###
+
+# 赋值:
+number   = 42 #=> var number = 42;
+opposite = true #=> var opposite = true;
+
+# 条件:
+number = -42 if opposite #=> if(opposite) { number = -42; }
+
+# 函数:
+square = (x) -> x * x #=> var square = function(x) { return x * x; }
+
+fill = (container, liquid = "coffee") ->
+  "Filling the #{container} with #{liquid}..."
+#=>var fill;
+#
+#fill = function(container, liquid) {
+#  if (liquid == null) {
+#    liquid = "coffee";
+#  }
+#  return "Filling the " + container + " with " + liquid + "...";
+#};
+
+# 区间:
+list = [1..5] #=> var list = [1, 2, 3, 4, 5];
+
+# 对象:
+math =
+  root:   Math.sqrt
+  square: square
+  cube:   (x) -> x * square x
+#=> var math = {
+#  "root": Math.sqrt,
+#  "square": square,
+#  "cube": function(x) { return x * square(x); }
+#}
+
+# Splats:
+race = (winner, runners...) ->
+  print winner, runners
+#=>race = function() {
+#  var runners, winner;
+#  winner = arguments[0], runners = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
+#  return print(winner, runners);
+#};
+
+# 存在判断:
+alert "I knew it!" if elvis?
+#=> if(typeof elvis !== "undefined" && elvis !== null) { alert("I knew it!"); }
+
+# 数组推导:
+cubes = (math.cube num for num in list) 
+#=>cubes = (function() {
+#	var _i, _len, _results;
+#	_results = [];
+# 	for (_i = 0, _len = list.length; _i < _len; _i++) {
+#		num = list[_i];
+#		_results.push(math.cube(num));
+#	}
+#	return _results;
+#  })();
+
+foods = ['broccoli', 'spinach', 'chocolate']
+eat food for food in foods when food isnt 'chocolate'
+#=>foods = ['broccoli', 'spinach', 'chocolate'];
+#
+#for (_k = 0, _len2 = foods.length; _k < _len2; _k++) {
+#  food = foods[_k];
+#  if (food !== 'chocolate') {
+#    eat(food);
+#  }
+#}
+```