Started work on filereader.
More work on UpgradesManager.
First version of filereader.
First version of filewriter.
Created an enum class for upgrades.
First version of upgrades as enums.
Updated the UpgradesManagers filewriter and reader.
Added permissions for writing and reading files into android manifest.
Updated filereader and writer in UpgradeManager to be way more awesome.
Added comments.
Made the methods in upgrademanager public.
Merged develop and UpgradeManager.