Added search to interface and UI

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8160 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Included features section in Readme.md

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8165 ee4118f4-65c3-8c42-83c6-dbb17464b6b1