use libsass (#22)

Avoid ruby dependency

Gruntfile.js

@@ -17,7 +17,7 @@ module.exports = function (grunt) {
 
   grunt.loadTasks("tasks")
 
-  grunt.registerTask("default", ["bower-install-simple", "lint", "saveRevision", "copy", "sass", "requirejs"])
+  grunt.registerTask("default", ["bower-install-simple", "lint", "saveRevision", "copy", "sass", "postcss", "requirejs"])
   grunt.registerTask("lint", ["eslint"])
   grunt.registerTask("dev", ["default", "connect:server", "watch"])
 }

README.md

@@ -21,11 +21,9 @@ HopGlass is a frontend for the [HopGlass Server](https://github.com/plumpudding/
 
 # Installing dependencies
 
-Install npm and Sass with your package-manager. On Debian-like systems run:
+Install npm package-manager. On Debian-like systems run:
 
-    sudo apt-get install npm ruby-sass
+    sudo apt-get install npm
-
-or if you have bundler you can install ruby-sass simply via `bundle install`
 
 On Mac you have to install only npm via brew and sass
 

package.json

@@ -4,6 +4,7 @@
     "test": "node -e \"require('grunt').cli()\" '' clean lint"
   },
   "devDependencies": {
+    "autoprefixer": "^6.3.3",
     "grunt": "^0.4.5",
     "grunt-check-dependencies": "^0.6.0",
     "grunt-contrib-clean": "^0.6.0",
@@ -11,7 +12,8 @@
     "grunt-contrib-copy": "^0.5.0",
     "grunt-contrib-cssmin": "^0.12.2",
     "grunt-contrib-requirejs": "^0.4.4",
-    "grunt-contrib-sass": "^0.9.2",
+    "grunt-sass": "^1.1.0",
+    "grunt-postcss": "^0.7.2",
     "grunt-contrib-uglify": "^0.5.1",
     "grunt-contrib-watch": "^0.6.1",
     "grunt-eslint": "^10.0.0",

tasks/build.js

@@ -56,15 +56,29 @@ module.exports = function(grunt) {
       }
     },
     sass: {
-      dist: {
       options: {
-          style: "compressed"
+        sourceMap: true,
+        outputStyle: "compressed"
       },
+      dist: {
         files: {
           "build/style.css": "scss/main.scss"
         }
       }
     },
+    postcss: {
+      options: {
+        map: true,
+        processors: [
+          require("autoprefixer")({
+            browsers: ["last 2 versions"]
+          })
+        ]
+      },
+      dist: {
+        src: "build/style.css"
+      }
+    },
     cssmin: {
       target: {
         files: {
@@ -106,5 +120,6 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks("grunt-bower-install-simple")
   grunt.loadNpmTasks("grunt-contrib-copy")
   grunt.loadNpmTasks("grunt-contrib-requirejs")
-  grunt.loadNpmTasks("grunt-contrib-sass")
+  grunt.loadNpmTasks("grunt-sass")
+  grunt.loadNpmTasks("grunt-postcss")
 }