Run less before minift-css

Sometimes minify-css can run before less since they are parallel tasks
Make minify-css wait for the completion of less so the freelancer.min.css file is always generated.
Otherwise gulp needs to be run twice to ensure an updated *.min.css file

gulpfile.js

@@ -32,7 +32,7 @@ gulp.task('less', function() {
 });
 
 // Minify CSS
-gulp.task('minify-css', function() {
+gulp.task('minify-css', ['less'], function() {
     return gulp.src('css/freelancer.css')
         .pipe(cleanCSS({ compatibility: 'ie8' }))
         .pipe(rename({ suffix: '.min' }))
@@ -99,4 +99,4 @@ gulp.task('dev', ['browserSync', 'less', 'minify-css', 'minify-js'], function()
     // Reloads the browser whenever HTML or JS files change
     gulp.watch('*.html', browserSync.reload);
     gulp.watch('js/**/*.js', browserSync.reload);
-});
+});
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