Set up Grunt

Fixing up Grunt file to watch for directories

Exclude node modules folder from Jekyll built site

Gruntfile.js

@@ -0,0 +1,79 @@
+// Gruntfile
+module.exports = function(grunt) {
+var autoprefixer = require('autoprefixer-core');
+require('load-grunt-tasks')(grunt);
+
+  // Project configuration.
+  grunt.initConfig({
+
+    pkg: grunt.file.readJSON('package.json'),
+
+    watch: {
+      css: {
+        files: ['_sass/*.scss'],
+        tasks: ['sass', 'postcss', 'shell:jekyllBuild'],
+        options: {
+          spawn: false,
+          interrupt: true,
+          atBegin: true
+        }
+      },
+
+      jekyll: {
+        files: ['index.html', '_includes/*.html', 'filters/*.*',  '_layouts/*.*', '_posts/*.*'],
+        tasks: ['shell:jekyllBuild']
+      }
+
+    },
+
+    sass: {
+      dist: {
+        options: {
+          style: 'expanded',
+          sourcemap: 'none'
+        },
+        files: {
+          '_site/css/main.css':'_sass/main.scss'
+        }
+      }
+    },
+
+    shell: {
+      jekyllServe: {
+        command: 'jekyll serve --no-watch'
+      },
+
+      jekyllBuild: {
+        command: 'jekyll build'
+      }
+    },
+
+
+    postcss: {
+      options: {
+        map: true,
+        processors: [
+          autoprefixer({ browsers: ['last 2 version'] }).postcss
+        ]
+      },
+      dist: {
+        src: '_site/css/*.css'
+      }
+    },
+
+    concurrent: {
+      tasks: ['shell:jekyllServe', 'watch'],
+      options: {
+        logConcurrentOutput: true
+      }
+    }
+  });
+
+  grunt.loadNpmTasks('grunt-contrib-watch');
+  grunt.loadNpmTasks('grunt-contrib-sass');
+  grunt.loadNpmTasks('grunt-postcss');
+  grunt.loadNpmTasks('grunt-concurrent');
+
+  // grunt.registerTask('default', ['shell:jekyllServe', 'watch']);
+  grunt.registerTask('default', ['concurrent']);
+};