Allow passing a few useful arguments to node-sass binary

Specifically, a `cwd` and `output_style` so partials can be loaded correctly and we can compress out output

bin/node-sass

@@ -3,13 +3,17 @@ var colors    = require('colors');
 var fs        = require('fs');
 var sass      = require('../sass');
 var path      = require('path');
-var fileName  = process.argv[2];
-var cssFileName = process.argv[3];
+var argv      = require('optimist').argv;
+
+var fileName  = argv._[0];
+var cssFileName = argv._[1];
+var outputStyle = argv['output-style'];
+var cwd = argv.cwd || process.cwd();
 
 console.log('Starting Render Process...'.green);
 
 if (fileName) {
-  fs.readFile(fileName, "utf8", function(err, data) {
+  fs.readFile(path.join(cwd, fileName), "utf8", function(err, data) {
     if (err) {
       console.log("** Error Opening File **".red);
       console.log(JSON.stringify(err, null, 4).yellow);
@@ -42,15 +46,15 @@ function renderSASS(data) {
       writeCssFile(outFile, compiled);
 
     }
-  });
+  }, {include_paths: [cwd], output_style: outputStyle});
 }
 
 function writeCssFile(filename, data) {
-  fs.writeFile(filename, data, function(err){
+  fs.writeFile(path.join(cwd, filename), data, function(err){
     if(err) {
       console.log('Error: ' + err);
     } else {
       console.log('File saved! New .css file: ' + filename);
     }
   });
-}
\ No newline at end of file
+}

package.json

@@ -31,7 +31,8 @@
   },
   "dependencies": {
     "mkdirp": "0.3.x",
-    "colors": "0.6.0-1"
+    "colors": "0.6.0-1",
+    "optimist": "0.3.x"
   },
   "devDependencies": {
     "mocha": "1.7.x"