ffupdater/dev/checklist_add_new_app.md

Checklist for adding new apps:

• add new class in de.marmaro.krt.ffupdater.app.impl
• add entry in de.marmaro.krt.ffupdater.app.AppList
• add entry in the arrays disabledAppEntries + disabledAppEntryValues in src/main/res/values/arrays.xml
• update README.md
• update (full/short)_description.txt