Add screenshot

[vinodrenu]

Adding screenshots on the plugin page or here in Github will be helpful for the new users.

[likehopper]

Yes, I'll prepare a first " step by step " presentation of a simple configuration to add in documentation.

[likehopper]

I just added two first simple examples:

• https://github.com/likehopper/redmine_sla/blob/main/doc/EXAMPLE-01.md
• https://github.com/likehopper/redmine_sla/blob/main/doc/EXAMPLE-02.md

Thanks for your feedback!

[vinodrenu]

Thank You. Much appreciated.

[likehopper]

I will continue with a more complex example (taking into account interventions during non-working hours)