Check if running in AWS before initializing

[loganm27]

Resolves #27

[ctrimble]

@loganm27 my apologies for missing this back in November. I took a look at the PR and MULTI_PING. I think I understand what you are trying to achieve.

I am happy to get support for this use case in the project. I have a couple of concerns:

1. In cases where this is the only PING being used and it is not being used in AWS, this PING implementation will init instead of just failing and the only signal will be a log at level debug and I assume a bunch of NPEs getting thrown.
2. In the case where you are using this with MULTI_PING and you are outside of AWS, it seems like you would again get tons of NPEs happening.

I wonder if the implementation needs a lenient flag and when that is in effect, the implementation detects not being in AWS, logs at info that it is not in AWS, and just NOOPs from that point forward.