Small update to yarn

Author: Cody Reeves

.travis.yml

@@ -3,6 +3,9 @@ node_js:
   - "iojs"
   - "7"
 cache:
+  yarn: true
+  directories:
+    - node_modules
 yarn: true
 before_script:
   - yarn 

Gulpfile.js

@@ -81,9 +81,7 @@ gulp.task('sass', function () {
 gulp.task('clean', function () {
   return gulp.src(paths.css.src)
     .pipe(stripCssComments({ preserve: /(^#|^!)/ }))
-    .pipe(uglifycss({
-      "maxLineLen": 100,
-    }))
+    .pipe(uglifycss())
     .pipe(gulp.dest(paths.css.dest));
 });