added instructions for solution upload

README.md

@@ -13,8 +13,23 @@ We will provide you with the skeleton for the programming exercises so that you
 git clone https://git.pranger.xyz/sp/lub2022-practical.git --origin upstream
 ```
 2. Start solving the examples!
+3. As soon as you have solved some of the examples you can add your solution repository:
+```bash
+git remote add origin https://git.teaching.iaik.tugraz.at/lc22/lc22gXX.git
+```
+If you have an ssh key deployed to the IAIK teaching-git server you can add your repository like such:
+```bash
+git remote add origin git@git.teaching.iaik.tugraz.at:lc22/lc22gXX.git
+```
+Replace the `XX` with your ID.
 
-_We will provide you with your own repositories over the course of the next week. As soon as you have these repositories, we will give you a short description on how you can push your solutions._
+4. From here on you can
+```bash
+git add <your_files>
+git commit -m "<your commit message>"
+git push -u origin main
+```
+to upload your solutions.