Fix #331
Use logger instead of println
Update README.md
Merge pull request #332 from mslinn/patch-1

Update README.md
Fix #334
(refs #335)Use string before '@' of mail address if user name is mail address in LDAP authentication.
(refs #335)Use string before '@' of mail address if user name is mail address in LDAP authentication.
(refs #335)Oops, fix substring condition