add sass include_paths and output_style args

binding.cpp

@@ -51,8 +51,8 @@ Handle<Value> Render(const Arguments& args) {
 
     ctx->source_string = new char[strlen(*astr)+1];
     strcpy(ctx->source_string, *astr);
-    ctx->options.include_paths = 0;
-    ctx->options.output_style = SASS_STYLE_NESTED;
+    ctx->options.include_paths = args[2];
+    ctx->options.output_style = args[3];
     ctx->callback = Persistent<Function>::New(callback);
     ctx->request.data = ctx;
 

sass.js

@@ -13,6 +13,22 @@ try {
 if (binding === null) {
   throw new Error('Cannot find appropriate binary library for node-sass');
 }
-
-exports.render = binding.render
+var toString = Object.prototype.toString;
+SASS_OUTPUT_STYLE = {
+    nested: 0,
+    expanded: 1,
+    compact: 2,
+    compressed: 3
+};
+exports.render = function(css, callback, options) {
+    var paths, style;
+    if (toString.call(options) !== '[object Object]') {
+        options = {};
+    }
+    paths = options.include_paths || [];
+    if (!((style = options.output_style) in SASS_OUTPUT_STYLE)) {
+        style = 'nested';
+    }
+    return binding.render(css, callback, paths.join(':'), SASS_OUTPUT_STYLE[style]);
+};
 exports.middleware = require('./lib/middleware');