Migrate to unifiedjs organisation

Author: wooorm

package.json

@@ -11,8 +11,8 @@
     "diff",
     "pr"
   ],
-  "repository": "https://github.com/wooorm/unified-diff",
-  "bugs": "https://github.com/wooorm/unified-diff/issues",
+  "repository": "https://github.com/unifiedjs/unified-diff",
+  "bugs": "https://github.com/unifiedjs/unified-diff/issues",
   "author": "Titus Wormer <tituswormer@gmail.com> (http://wooorm.com)",
   "contributors": [
     "Titus Wormer <tituswormer@gmail.com> (http://wooorm.com)"

readme.md

@@ -136,21 +136,21 @@ variable this plugin runs, otherwise it’s a noop.
 
 <!-- Definitions -->
 
-[travis-badge]: https://img.shields.io/travis/wooorm/unified-diff.svg
+[travis-badge]: https://img.shields.io/travis/unifiedjs/unified-diff.svg
 
-[travis]: https://travis-ci.org/wooorm/unified-diff
+[travis]: https://travis-ci.org/unifiedjs/unified-diff
 
-[codecov-badge]: https://img.shields.io/codecov/c/github/wooorm/unified-diff.svg
+[codecov-badge]: https://img.shields.io/codecov/c/github/unifiedjs/unified-diff.svg
 
-[codecov]: https://codecov.io/github/wooorm/unified-diff
+[codecov]: https://codecov.io/github/unifiedjs/unified-diff
 
 [npm-install]: https://docs.npmjs.com/cli/install
 
 [license]: LICENSE
 
 [author]: http://wooorm.com
 
-[unified]: https://github.com/wooorm/unified
+[unified]: https://github.com/unifiedjs/unified
 
 [alex]: https://github.com/wooorm/alex