License obligations readme fix (#19)

* Update .gitignore to restrict *.swp file changes
* Add 3rd party licenses section in readme

Signed-off-by: David Greven <fixed-term.David.Greven@de.bosch.com>
Signed-off-by: Sebastian Becker <Sebastian.Becker@de.bosch.com>

.gitignore

@@ -5,6 +5,8 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
+*.swp
+
 ### Maven
 target/
 

README.md

@@ -19,6 +19,12 @@ This is the future CLI tool to communicate with the Carbyne Stack services.
 The Carbyne Stack *Command Line Interface* is open-sourced under the Apache
 License 2.0. See the [LICENSE](LICENSE) file for details.
 
+### 3rd Party Licenses
+
+For information on how license obligations for 3rd party OSS dependencies are
+fulfilled see the [README](https://github.com/carbynestack/carbynestack) file of
+the Carbyne Stack repository.
+
 ## Contributing
 
 Please see the Carbyne Stack