Added basic usage of .css file as config

Author: kizu

lib/cli.js

@@ -25,8 +25,16 @@ if (!program.args.length) {
 var configPath = program.config || (process.cwd() + '/.csscomb.json');
 
 if (fs.existsSync(configPath)) {
-    var comb = new Comb();
-    var config = require(configPath);
+    var comb;
+    var config;
+    if (configPath.match(/\.css$/)) {
+        comb = new Comb();
+        comb.detect();
+        config = comb.processFile(configPath);
+    } else {
+        config = require(configPath);
+    }
+    comb = new Comb();
 
     console.time('spent');
 

lib/csscomb.js

@@ -1,6 +1,7 @@
 var gonzales = require('gonzales-pe');
 var minimatch = require('minimatch');
 var vow = require('vow');
+var fs = require('fs');
 var vfs = require('vow-fs');
 var doNothing = function() {};
 
@@ -173,6 +174,9 @@ Comb.prototype = {
      */
     processFile: function(path) {
         var _this = this;
+        if (_this._detect) {
+            return _this.processString(fs.readFileSync(path, 'utf8'), path);
+        }
         if (this._shouldProcessFile(path)) {
             return vfs.read(path, 'utf8').then(function(data) {
                 var syntax = path.split('.').pop();