Follow through on the suggestions given when 1.0.0 release was made.  - Added Incubator disclaimer to README.txt as suggested (happily stole the one used by Apache Kato)
Follow through on the suggestions given when 1.0.0 release was made. 
- Added Incubator disclaimer to README.txt as suggested (happily stole the one used by Apache Kato)

git-svn-id: b992ad72ce451249ae394650ed6fff1ebb4bf6b8@979181 13f79535-47bb-0310-9956-ffa450edef68

feige712/shiro,apache/shiro,feige712/shiro,apache/shiro,relateiq/shiro