moved adapter to suggest

Author: schmunk42

composer.json

@@ -17,8 +17,6 @@
     "require": {
         "yiisoft/yii2": "~2.0.13",
         "creocoder/yii2-flysystem": "^1.0.0",
-        "league/flysystem-sftp": "~1.0",
-        "league/flysystem-webdav": "~1.0",
         "dmstr/yii2-active-record-permissions": "^1.0.0"
     },
     "autoload": {
@@ -27,7 +25,9 @@
         }
     },
     "suggest": {
-        "dmstr/yii2-filemanager-widgets": "Useful widget for working with files via the filefly api"
+        "dmstr/yii2-filemanager-widgets": "Useful widget for working with files via the filefly api",
+        "league/flysystem-sftp": "SFTP adapter (~1.0)",
+        "league/flysystem-webdav": "WebDAV adapter (~1.0)"
     },
     "extra": {
         "bootstrap": "hrzg\\filefly\\Bootstrap"