Merge branch 'build-enhancement' into development

Closes #368

-dist/*
 *~
 *.iml
 *.swp
 tmp/**
-test/**
\ No newline at end of file
+test/**

 'use strict';
 
-var basename = require('path').basename;
+var
+  basename = require('path').basename,
+  mediaSourcesPath = 'node_modules/videojs-contrib-media-sources/dist/',
+  mediaSourcesDebug = mediaSourcesPath + 'videojs-media-sources.js';
 
 module.exports = function(grunt) {
   var pkg = grunt.file.readJSON('package.json');
@@ -24,22 +27,17 @@ module.exports = function(grunt) {
       },
       dist: {
         nonull: true,
-        src: ['src/videojs-hls.js',
-              'src/stream.js',
-              'src/flv-tag.js',
-              'src/exp-golomb.js',
-              'src/h264-extradata.js',
-              'src/h264-stream.js',
-              'src/aac-stream.js',
-              'src/metadata-stream.js',
-              'src/segment-parser.js',
-              'src/m3u8/m3u8-parser.js',
-              'src/xhr.js',
-              'src/playlist.js',
-              'src/playlist-loader.js',
-              'node_modules/pkcs7/dist/pkcs7.unpad.js',
-              'src/decrypter.js'
-            ],
+        src: [
+          mediaSourcesDebug,
+          'src/videojs-hls.js',
+          'src/xhr.js',
+          'src/stream.js',
+          'src/m3u8/m3u8-parser.js',
+          'src/playlist.js',
+          'src/playlist-loader.js',
+          'node_modules/pkcs7/dist/pkcs7.unpad.js',
+          'src/decrypter.js'
+        ],
         dest: 'dist/videojs.hls.js'
       }
     },
@@ -99,6 +97,10 @@ module.exports = function(grunt) {
       }
     },
     watch: {
+      build: {
+        files: '<%= concat.dist.src %>',
+        tasks: ['clean', 'concat', 'uglify']
+      },
       gruntfile: {
         files: '<%= jshint.gruntfile.src %>',
         tasks: ['jshint:gruntfile']
@@ -334,13 +336,16 @@ module.exports = function(grunt) {
   // Launch a Development Environment
   grunt.registerTask('dev', 'Launching Dev Environment', 'concurrent:dev');
 
-  // Default task.
-  grunt.registerTask('default',
+  grunt.registerTask('build',
                      ['clean',
-                      'test',
                       'concat',
                       'uglify']);
 
+  // Default task.
+  grunt.registerTask('default',
+                     ['test',
+                      'build']);
+
   // The test task will run `karma:saucelabs` when running in travis,
   // otherwise, it'll default to running karma in chrome.
   // You can specify which browsers to build with by using grunt-style arguments