Fixed spelling of "steeper"

Fixed spelling of "steeper" from "stepper" and a minor grammatical error.
Merge pull request #58 from ujjwalt/patch-1

Fixed spelling of "steeper"
ActiveSupport: Always! load active_support before its other parts

This is a follow up of this issue: https://github.com/triAGENS/guacamole/pull/57. I was a bit too fast on that one. Sorry :-(
Merge pull request #59 from triAGENS/cleanup-active-support-loading

ActiveSupport: Always! load active_support before its other parts
We want to build against the latest Ruby as well
Use latest Ruby (2.1.2) as ruby-version