Add .dropboxignore directory to exclude folders without using selective sync

I'm constanly in need of changing my development environment, and I love using dropbox because other than using github its more up to date and it also contains my IDE preferences, sometimes I get bored from desktop and take my laptop and continue from there thanks to Dropbox, but recently I built a new machine and installed a fresh dropbox, selected only development folder with few projects to sync, but because of node_modules folders its around 200.000 files and it will take forever to download, its not about the size of the files, its the amount that makes it harder to sync, and I dont even need those files.. files I need are maximum 100.

There are also other scenarios like the need of to not sync ._* files generated by osx etc.

It might not be profitable for you to make developers your users, and making this update may interest developers more, but we are your user anyway, so with optimizations like these you can save from a lot of http requests and storage space, we generally use little space but with tons of little files.

Thanks