Merge pull request #249 from jdaggett/autoscale-fix

Rename Auto Scaling to Auto Scale
Fix bullet lists.
Authenticate via pyrax.
Trim out comments meant for deeper guide.
Link to the autoscale docs in the sidebar.
Consistency within scaling policy creation
Make autoscale guide less wordy
Trim it, make it more of a narrative
Consistency of scalingGroupId
Consistency of templated variables.
Link servers and monitoring
:bullettrain_side: :gun:
Second person. :woman: :man:
Merge pull request #247 from rgbkrk/cleanup_autoscale

[Autoscale] Cleaning up Autoscale, filling in missing pieces