Hi, I just developed a site called StellarTip.me that is designed to make it a little easier to get tips in stellar using your github login. Right now you sign up on the site, you enter your Stellar public key and it provides you a link and a button that you can place on your GitHub project page. There's still so much more that I'm planning on adding to it, but please let me know what you think and what features you would like to see!
I haven't added the ability to actually submit a payment through the site yet for security reasons, I don't really want to ask users to provide their secret key, but I'm looking at other ways to possibly make tipping users in Stellar a little easier.