Updated package ReadMe with working example

Package ReadMe file suggests using a special AppSettings key when native
libraries are moved to another folder.
That key does not seem to be effective, so we changed ReadMe with a
working example whne libraries are moved to another folders.
Merge pull request #29 from BrainCrumbz/Dev/AppSettings-Obsolete

Updated package ReadMe with working example
Merge branch 'master' of https://github.com/webgio/Rotativa