support running rubudocs with mono on *nix
Merge pull request #43 from alistair/linuxify_ruby_script

support running rubudocs with mono on *nix
no longer applies chrome to topics in Host roots.  Closes GH-44
parallelized project loading.  Didn't matter much though.  Closes GH-52
better error message for a missing snippet.  Closes GH-50
plopped the topic previous/next links at the bottom of the topic pages.  No points for style.  Closes GH-48
hiding the title when it's a project index page.  Closes GH-41
project properties works again.  Closes GH-40
cleaning out fubu-content in the host directory if it exists to ensure we get fresh content.  Closes GH-38
fixed the view helpers page.   Closes GH-49
Closes GH-51, closes GH-49
Closes GH-53.  Also attempted to fix the scrollspy and affix usage with little success