Simplified pod-template

Premise 1: The default install is too intimidating. We are all rubyists & used to the command line, and the idea of having a root folder full of Podfiles & Gemfiles & Rakefiles is :+1:. For everyone else it's a barrier to entry. The new template ( https://github.com/orta/MyLib ) is clean and makes sense for everyone looking at the project. Pod stuff goes in `/Pod/` - Example go in `/Example/`.

Premise 2: People want to update via a command, I'm not everyone, but I'm willing to bet very few people have read the rakefile and learned the commands to do patch updates. I didn't, and I've used this template a few times now. FWIW, I think this could be turned into a cocoapods-plugin.

Premise 3: People want to have all these crazy custom setups. Every time I want to build a gem, I go and find a Gem template and just start from there. If they include a test framework and show how to use it, I'll play with that.

Premise 4: The terminal shouldn't tell you everything, the corresponding guide is important. http://guides.cocoapods.org/making/using-pod-lib-create.html - once this is merged I will gut http://guides.cocoapods.org/making/making-a-cocoapod.html and make it more around best practices about building your library ( which the latter half is right now )

/cc @alloy @fabiopelosin
Keeping this as default as possible, travis presume xctool use by default therefore we should do that too. Installing gems etc is nice ( and I use it in my artsy stuff ) but I wanted to keep this minimal. I originally did it with xcodebuild.