Moving playbook syntax examples to ansible-examples repo

Hi everyone,

Just a quick note that I’ve moved the playbook language syntax examples from the “examples/playbooks” dir in the git checkout to the “ansible-examples” repo.

This is so that more people can find them more easily, but that we also have examples all in one place.

See the new directory here:

https://github.com/ansible/ansible-examples/tree/master/language_features

These aren’t quite all language related so contents may change a bit over time.

I also went through and updated most of the variable syntaxes to use {{ foo }} instead of $foo to be consistent. I may have missed a few things, and kept a few $x things in place for where that kind of variable reference was useful. (They don’t come up often).