turned into LibraryProject
moved to new package
Added methodes for generating random String, SecretKey and reading/writing random iv to file
added a little bit salt
generate random IV and save it to a file in the private app dir
added ability to save boolean values

the value is not encrypted, because guessing is easy with only two
options. The key however will be encrypted, if the flag is set.
:bowtie:
formatting :zzz:
readme updated