OPENIDM-2529 Readme update, review with Ladislav over Skype


git-svn-id: https://svn.forgerock.org/openidm/trunk@4277 d98387aa-ee2c-4292-a9e6-504d2a719fd3
Spotted a typo in previous commit and did a quick read through while I was fixing it.

git-svn-id: https://svn.forgerock.org/openidm/trunk@4278 d98387aa-ee2c-4292-a9e6-504d2a719fd3
OPENIDM-2537 - CR-5243 - Missing icon error for ScriptedCREST fixed.

git-svn-id: https://svn.forgerock.org/openidm/trunk@4279 d98387aa-ee2c-4292-a9e6-504d2a719fd3
Adding admonition graphics.

git-svn-id: https://svn.forgerock.org/openidm/trunk@4280 d98387aa-ee2c-4292-a9e6-504d2a719fd3