For those coding in C# I have released my open source framework here:
http://glorylo.github.io/Joyride
It helps you quickly up and running with Appium. This framework was extracted from the tests I have written where we have the same app, mostly native with some webviews, on iOS and Android. We have found it working very well for our android tests thus far and will be transitioning our efforts onto iOS.
It is built for writing cross platform specs in the form of gherkin and cucumber. I know it will help those getting started without having to rewrite boilerplate code.
Glory