I almost forgot you're using Github for your code. Github has a release feature you can use,
so you don't need to upload executables anywhere.
If you just want to link us a file or two, it's simplest to use http://www.zippyshare.com/
(they do delete it after 30 days of inactivity).
If you want a long-term solution for some files:Dropbox
has a 2GB free storage that you can set up to sync automatically to a folder on your PC. But you can just use the web uploader if you don't want to install the thing (it runs in the taskbar all the time).
You can put anything in it (zip it for good measure). Except for copyrighted movies, I tried that once. Apparently they do look at your files in that regard.
Share files by putting them in the Public folder, right clicking them and selecting "copy public link".
There is an alternative (for synced auto-backup thingy) called Tresorit
, it's zero-knowledge encrypted, meaning the company itself doesn't have access to your files, since they are encrypted on your machine using your password. Otherwise it's the same as Dropbox but with 3GB space and a much worse sharing system. (Links expire in 30 days and are limited to 20 downloads. Also you can only create 10 links per month. In comparison, Dropbox links are unlimited as far as I know.) For Tresorit, there is also a 500MB individual file size limit.
(Edit: also, for both Tresorit and Dropbox, there is of course the option of not letting them start when your system starts and run all the time, but just running them whenever you need them.)