Your best bet would be to peruse the TMobile S5 threads, and find someone willing to backup the apk from their rooted S5, and see if you can download and install it. If you can, I'm sure many more would be grateful if you can then post a link over here too. Thanks
I updated the install instructions post HERE. I was able to create installable backup apk's from my Verizon phone of the apps needed, and host em on Google Drive.