Update README.md
Update README.md

Update Link to picture of IMSI catcher
Create CREDITS

Credits to be included in the final App.
Update README.md
Update CREDITS
Create .gitignore
Adding important Papers on the Subjekt - huge THANKS to Tom Mayer!

Papers from deprecated Projekt: https://github.com/tom-mayer/imsi-catcher-detection/
Merge branch 'master' of https://github.com/SecUpwN/Android-IMSI-Catcher-Detector
Banning .DS_Store
Merge branch 'master' of https://github.com/SecUpwN/Android-IMSI-Catcher-Detector