Update .gitattributes and composer.json

.gitattributes

@@ -13,6 +13,6 @@ Thumbs.db export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
 .github export-ignore
-lang/*.po export-ignore
-lang/*.pot export-ignore
-lang/*.md export-ignore
+languages/*.po export-ignore
+languages/*.pot export-ignore
+languages/*.md export-ignore

composer.json

@@ -1,6 +1,6 @@
 {
   "name": "wpmetabox/meta-box",
-  "type": "library",
+  "type": "wordpress-plugin",
   "keywords": [
     "wordpress",
     "ui",
@@ -18,13 +18,8 @@
     {
       "name": "Tran Ngoc Tuan Anh",
       "email": "anhtnt@elightup.com",
-      "homepage": "https://deluxeblogtips.com",
+      "homepage": "https://metabox.io",
       "role": "Developer"
     }
-  ],
-  "autoload": {
-    "files": [
-      "meta-box.php"
-    ]
-  }
+  ]
 }