Install flow.js (uploader) via composer (#4469)

Author: sreichel

.gitignore

@@ -23,6 +23,9 @@
 /app/etc/modules/Cm_RedisSession.xml
 /lib/Credis
 
+# flow.js library
+/js/lib/uploader
+
 # TinyMCE library
 /js/lib/tinymce
 

composer.json

@@ -28,6 +28,7 @@
         "colinmollenhour/magento-redis-session": "^3.2.0",
         "cweagans/composer-patches": "^1.7",
         "ezyang/htmlpurifier": "^4.17",
+        "flowjs/flowjs": "dev-master",
         "magento-hackathon/magento-composer-installer": "^3.1 || ^2.1 || ^4.0",
         "mklkj/tinymce-i18n": "^24.11",
         "openmage/composer-plugin": "^3.0",