Merge pull request CrunchyData#286 from mhuttner/patch-1

Add missing ShowConfig pgo Permission

add pgo show config command

add pgo show config command

fix conflict after merge

update version numbers to 3.0"

update pgo.yaml config file to latest version

Merge pull request CrunchyData#173 from cmwshang/master

Some minor tweaks for asciidoc conformity.

add missing example file

fix merge pre26 conflicts

update docs related to quickstart