Add translation contribution guide

Author: iliaross

README.md

@@ -23,3 +23,27 @@ environment. The `--minimal` flag also works with a `LEMP` installation.
 
 We support this plugin on the same [operating systems as Virtualmin itself](https://www.virtualmin.com/docs/os-support/).
 
+### Contributing Translations
+
+If you'd like to help improve `virtualmin-nginx` translations, please see our [translation contribution guide](https://www.virtualmin.com/docs/development/translations/).
+
+The following languages are currently supported for `virtualmin-nginx`:
+
+| Language | Human | Machine | Missing | Coverage (Human vs. Total) |
+|----------|-------|---------|---------|----------------------------|
+| cs       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| de       | 0     | 466     | 0       |   0.0%   /  100.0%         |
+| en       | 466   | 0       | 0       |   100.0% /  100.0%         |
+| es       | 0     | 466     | 0       |   0.0%   /  100.0%         |
+| fr       | 0     | 466     | 0       |   0.0%   /  100.0%         |
+| it       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| ja       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| nl       | 440   | 25      | 1       |  94.4%   /   99.8%         |
+| no       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| pl       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| pt_BR    | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| ru       | 0     | 466     | 0       |   0.0%   /  100.0%         |
+| sk       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| tr       | 0     | 465     | 1       |   0.0%   /   99.8%         |
+| zh       | 0     | 466     | 0       |   0.0%   /  100.0%         |
+| zh_TW    | 0     | 466     | 0       |   0.0%   /  100.0%         |