Update guide README and add additional autoscaler guide details.

jrasell · May 9, 2019 · 9219770 · 9219770
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diff --git a/docs/guides/README.md b/docs/guides/README.md
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 # Sherpa Guides
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+Welcome to the Sherpa guides. The guides provide examples for common Sherpa workflows and actions for both users and operators of Nomad clusters running Sherpa.
diff --git a/docs/guides/autoscaler.md b/docs/guides/autoscaler.md
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 # AutoScaler
 
-Sherpa can run using an internal autoscaler which uses Nomad job resource utilization stats to determine whether a group should be scaled or not. 
+Sherpa can run using an internal autoscaler which uses Nomad job resource utilization stats to determine whether a group is eligible for scaling. The autoscaler will iterate stored policies, performing calculations to figure out each job group CPU and memory consummation. If consumption is above 80% or below 20%, Sherpa will request scaling of the job group as long as the scaling policies limits are not violated.
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		# Sherpa Guides

		Welcome to the Sherpa guides. The guides provide examples for common Sherpa workflows and actions for both users and operators of Nomad clusters running Sherpa.