replace readme

git-svn-id: https://plugins.svn.wordpress.org/cm-onboarding/trunk@1051090 b8457f37-d9ea-0310-8a92-e5e31aec5664
replace readme

git-svn-id: https://plugins.svn.wordpress.org/cm-onboarding/trunk@1051091 b8457f37-d9ea-0310-8a92-e5e31aec5664