Notifications system. Mainly to be used in case the updater breaks.

Can be tested on linux by calling CMake with the following arguments:
cmake -DMultiMC_NOTIFICATION_URL=http://pastebin.com/raw.php?i=Ttkyvhcg -DMultiMC_UPDATER=ON -DMultiMC_VERSION_BUILD=106 -DMultiMC_VERSION_BUILD_TYPE=lin64 -DMultiMC_VERSION_CHANNEL=develop

Using the above command should display 3 messages on startup. Try playing around with the pastebin to test the system.