adds a production, minified version

package.json

@@ -6,13 +6,20 @@
     "bower": "^1.7.7",
     "gulp": "^3.9.1",
     "gulp-angular-filesort": "^1.1.1",
+    "gulp-concat": "^2.6.0",
     "gulp-debug": "^2.1.2",
+    "gulp-filter": "^3.0.1",
+    "gulp-htmlhint": "^0.3.1",
+    "gulp-htmlmin": "^1.3.0",
     "gulp-inject": "^3.0.0",
     "gulp-jasmine": "^2.2.1",
     "gulp-jshint": "^2.0.0",
     "gulp-karma": "0.0.5",
     "gulp-load-plugins": "^1.2.0",
+    "gulp-minify-css": "^1.2.3",
+    "gulp-ng-annotate": "^1.1.0",
     "gulp-rename": "^1.2.2",
+    "gulp-uglify": "^1.5.3",
     "gulp-util": "^3.0.7",
     "jasmine-core": "^2.4.1",
     "jshint": "^2.9.1",