Updated version to next SNAPSHOT version.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1557414 13f79535-47bb-0310-9956-ffa450edef68
Entered correct release date.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1557415 13f79535-47bb-0310-9956-ffa450edef68
Dropped "Documentation" section from index.html.

This section was outdated. It is redundant; all information can be found in the
"Releases" section.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1557416 13f79535-47bb-0310-9956-ffa450edef68