GitHub pushing issue

Probably not the place to be posting this, but after I’ve commited on Unreal Engine 4, I open up the GitHub Desktop and push the commit, but it tells me only 100MB can be pushed.

Don’t push any build data. Github has a limit of 2GB in total.

Create or update your .gitignore to not show you files that you don’t need.

Here’s my .gitignore

Binaries
DerivedDataCache
Intermediate
Saved
*.VC.db
*.opensdf
*.opendb
*.sdf
*.sln
*.suo
*.xcodeproj
*.xcworkspace

Content/*_BuiltData.uasset
Build/*

You’ll have to undo your commit to be able to ignore files of this type.
Any files committed before you add the .gitignore will still be tracked.

And then what?