Update README.me for the new API endpoint, et. al.

- Loggly updated their API endpoint
- Some of the steps are no longer necessary it seems (like manually creating an input, etc.). This allows us to streamline the Getting Started.
Iterating on the README based on the feedback
h1 is too big. let's use h2
Merge pull request #4 from kiyoto/patch-1

Update README.me for the new API endpoint, et. al.