Added Changelog + How to update per version

UPDATE/UPDATE-1.0.md

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+# How to update to v1.0.x
+In order to update to version 1.0.x you just have to do `git pull`.
+
+# Changelog for MiPa-Pool v1.0.x
+
+## 1.0.1
+[View al changes from v1.0.0...v1.0.1](https://github.com/xPand4B/MiPa-Pool/compare/v1.0...v1.0.1)
+* Reorganized translations to better find them in code.
+
+## 1.0.0
+* Release version 1.0.0

UPDATE/UPDATE-1.1.md

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+# How to update to v1.1.x
+In order to update to version 1.1.x you have to do `git pull`.
+
+After that typ `php artisan migrate` to add the new migrations and your done.
+
+# Changelog for MiPa-Pool v1.1.x
+
+## 1.1.0
+[View al changes from v1.0.1...v1.1.0](https://github.com/xPand4B/MiPa-Pool/compare/v1.0.1...v1.1.0)
+* Added checkbox for marking a menu as payed _(Ajax live updater)_
+  * app/Http/Controllers/MenuController.php
+  * app/Http/Models/Menu.php
+  * database/migrations/2019_07_30_102356_add_payed_field_to_menus.php
+  * /resources/views/pages/manage/orders/index.blade.php
+  * /resources/views/pages/manage/orders/show.blade.php
+  * /resources/views/pages/orders/index.blade.php
+  * /resources/views/partials/_togglePayed.blade.php