Charset setting support
Rails returns "Content-Type: text/html; charset=utf-8"
and for Lotus it’s just "Content-Type: text/html"
it may be a problem with some languages like Russian
Merge branch 'charset-setting' of https://github.com/kirs/controller into kirs-charset-setting
Merge branch 'kirs-charset-setting'
Documentation adjustments. Ensure to duplicate default charset in configuration. Ref #48