fixed both issues https://github.com/toastdriven/pysolr/issues/96 and https://github.com/toastdriven/pysolr/issues/90 and updated test solr sever from 4.1.0 to 4.6.0. All tests pass
remove unnecessary comment
Merge pull request #104 from tongwang/master

Fix content extraction (thanks @tongwang)
Merge branch 'master' of github.com:toastdriven/pysolr