- add licence and readme.md files

LICENSE

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+MIT License
+-----------
+
+Copyright (c) 2020, Geologische Bundesanstalt (GBA)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

readme.md

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+## Getting Started
+
+These instructions will show you how to get a copy of the project and how to deploy the project on a live system.
+
+Create web folder:\
+`sudo mkdir -p /var/www/3d-app/`
+
+Clone the repository to your web folder:\
+`git clone https://github.com/geolba/GeotiefExplore.git /var/www/3d-app/`
+
+Switch to the repo folder:\
+`cd /var/www/3d-app/`
+
+Copy the example env file and make the required configuration changes in the .env file
+`cp .env.example .env`
+
+ `.env` - Environment variables can be set in this file
+Configure your database connection in .env-file e.g.:
+`nano .env`
+
+```ini
+NODE_ENV=production
+```
+Build production files:\
+`npm run prod`
+
+## License
+
+This project is licensed under the MIT License - see the [license](LICENSE) file for details