README.markdown: update somewhat
Regenerate READMEs
tools/cf-sketch/cf-sketch.pl: support multiple install sources
Revert "tools/cf-sketch/cf-sketch.pl: support multiple install sources"

This reverts commit ffdff1af999f0cf8d7c65483e84045f5ca07c94b.
Skip json markup tag, seems broken in documentation
Updated sample license key

To make the example clearer.
users: new sketch
Regenerate READMEs
run_withdata: add run_fromfile bundle
fix newrelic repo key obtain