Chaged ParamsFilter behavior for raw data post

if 'application/json' or 'application/xml' has been posted as content-type, then bypass parse_query.
PATCH, DELETEリクエスト時に文字コードエラーが出る現象に対応

ArgumentError (invalid byte sequence in UTF-8) というエラーが
発生する。 #32 で報告されている現象と同じ。
Search all view paths for mobile view templates
Merge pull request #61 from ogawaso/unreachable_action

Add `private` restrinctions to ViewSelector methods
add receive mail spec

error when mail include au's kigou
fix encode error

Encoding::UndefinedConversionError when jis mail(au mail) include special char
(①, etc)

change base encoding