Update README.md

Change tutorial link (again). Do they keep changing this on github, or what?
Merge branch 'master' into dev
Change "gmt" setting to "timezone"
Support setting the timezone offset
Change documentation spec to new timezone
Update version number to tag this release
Fix check for 'own splunk app' to do case-insensitive comparison
It now looks for 'sa-eventgen' or 'eventgen' without regard for case
Adding Windows support with eventgen.bat
Many many performance improvements
Updated build system to use ant
Merge branch 'dev' of github.com:splunk/eventgen into dev
Fixing bug with escaped slashes
Merge branch 'adrianhall-master' into dev