fixed warnings about deprecated BinaryUpdateRequestHandler and others

...updated timestamp; added IntelliJ IDEA files to gitignore

I got a warning from SOLR that BinaryUpdateRequestHandler is deprecated:

> WARN: Using deprecated class: BinaryUpdateRequestHandler -- replace with UpdateRequestHandler

So I changed the configuration according to instructions from this page: http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201310.mbox/%3C524ECB35.8040708@elyograg.org%3E

I also made some minor fixes like updating timestamps and adding files from my IDE - IntelliJ IDEA - to .gitignore.

Please accept my pull request.