Post-PC web-development: Try iOS 8 Git client
appliedphasor.com
appliedphasor.com
On its own it can browse your files, make edits, commit these edits and push the commits back to your remote to take full part in a git work-flow.
But the interesting part is iOS 8 advancements such that other apps will be able to open and edit files from your repositories. I hope that git support combined with specialised editing apps (made by other people) will open up what kind of work can be accomplished on iOS.
Sign-up for the beta and you will get download instructions ASAP.