Replace concat-helper with proper banner option

Gruntfile.js

@@ -18,15 +18,15 @@ module.exports = function(grunt) {
       all: 'test/*.css'
     },
     cssmin: {
-      options: {
-        banner: '/*my awesome css banner */'
-      },
       plain: {
         src: 'test/valid.css',
         dest: 'valid.min.css'
       },
       banner: {
-        src: ['<%= cssmin.options.banner %>', 'test/valid.css' ],
+        options: {
+          banner: '/*my awesome css banner */'
+        },
+        src: 'test/valid.css',
         dest: 'valid.min.banner.css'
       }
     }

package.json

@@ -28,7 +28,6 @@
     "sqwish": "0.2.0",
     "csslint": "0.9.9",
     "gzip-js": "0.3.1",
-    "grunt-lib-legacyhelpers": "0.1.0",
     "grunt-contrib-jshint": "~0.1.0"
   },
   "devDependencies": {

tasks/grunt-css.js

@@ -7,6 +7,8 @@
  */
 
 module.exports = function(grunt) {
+  "use strict";
+
   function min_max(min, max) {
     var gzip = require('gzip-js');
     var gzipSize = String(gzip.zip(min, {}).length);
@@ -65,14 +67,17 @@ module.exports = function(grunt) {
   });
 
   grunt.registerMultiTask( "cssmin", "Minify CSS files with Sqwish.", function() {
-    var banner;
-    var helpers = require('grunt-lib-legacyhelpers').init(grunt);
-    // get banner here
-    var max = helpers.concat( grunt.file.expandFiles( this.file.src ) );
-    var min = require( "sqwish" ).minify( max, false );
+    var options = this.options({
+      banner: ''
+    });
+    var src = grunt.file.read( this.file.src );
+    var min = require( "sqwish" ).minify( src, false );
+    if ( options.banner ) {
+      min = options.banner + grunt.util.linefeed + min;
+    }
     grunt.file.write( this.file.dest, min );
-    grunt.log.writeln( "File '" + this.file.dest + "' created." );
-    min_max( min, max );
+    grunt.log.writeln( "File '" + this.file.dest + "' written." );
+    min_max( min, src );
   });
 
 };

test/valid.css

@@ -1 +1,7 @@
-.myElement { font-size: 12pt; }
+/* first declaration */
+.myElement {
+	font-size: 12pt;
+	background: #eeeeee;
+	padding: 5px 2px 5px 2px;
+}
+/* more comments! */