New DeltaOS installer

os.pullEvent = os.pullEventRaw
local a = {...}
local br = "dev"
if a[1] == "--s" then
    br = "master"
end

shell.run("pastebin get W5ZkVYSi gitget")
shell.run("gitget N70 deltaOS "..tostring(br).." /")
shell.run("delete /system/*")
if fs.isDir("/recovery") then
    shell.run("delete /recovery/*")
end
shell.run("delete /data/*")
os.reboot()