Removed vendor from .distignore

The vendor folder is required for the plugin to function. Without this, the plugin fires an error in the admin

Author: igoojoe

.distignore

@@ -22,7 +22,6 @@ phpcs.ruleset.xml
 README.md
 wp-cli.local.yml
 tests
-vendor
 node_modules
 *.zip
 *.tar.gz