Moved implementations to separate wxPDFViewImpl class

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8114 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Added new class wxPDFViewDocumentFrame that combines all controls into a PDF viewer window

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8115 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Added screenshot to Readme.md

git-svn-id: http://devserv/svn/fluxdvd/components/wxPDFView/trunk@8116 ee4118f4-65c3-8c42-83c6-dbb17464b6b1
Revert "Merge branch 'master' of https://github.com/TcT2k/wxPDFView"

This reverts commit bc4f1b301cdbe0a3937b2ae947699c4e784ffd67, reversing
changes made to ea8a2699331e26e12aa622cfcc6d00ad1a4493e3.