Subdivide gulp build task

Author: Philipp Alferov

gulpfile.js

@@ -146,10 +146,15 @@ gulp.task('deploy:docs', function() {
 });
 
 gulp.task('build', function() {
+  sequence('build:src');
+  sequence('build:docs');
+});
+
+gulp.task('build:src', function() {
   config.isProd = true;
   browserifyDefaults = config.browserify.fileSaver;
 
-  sequence(['browserify']);
+  sequence('browserify', 'build:docs');
 });
 
 gulp.task('build:docs', function() {
@@ -170,7 +175,6 @@ gulp.task('watch:docs', ['serve'], function() {
   gulp.watch(config.docs.styles,  ['styles:docs']);
 });
 
-
 gulp.task('release:bump', function() {
 
   return gulp.src('./*.json')