read writefile

--------------------
--READ AND WRITE TO FILE [cred to Bogdan Vladu and LevelHelper]
-- THIS ONE HANDLES THE VARIABLE currentLevel
----------------------

function saveProgress( currentLevel )
    local path = system.pathForFile( "myTextfile.txt", system.DocumentsDirectory )
    local file = io.open( path, "w+b" )

    file:write(currentLevel)
    io.close( file )
end

function loadProgress()

    local currentLevel = 1

    local path = system.pathForFile( "myTextfile.txt", system.DocumentsDirectory )
    local file = io.open( path, "r" )

    if file then
        local contents = file:read( "*a" )

        currentLevel = tonumber(contents)

        io.close( file )
    end

    return currentLevel

end