thesisdown 0.0.2

Changed default filename (in directions) to be index instead of skeleton to match with gitbook requirements
Added preliminary files 00--prelim.Rmd and changed abstract.Rmd to 00-abstract.Rmd to match with renaming of files so that index.Rmd always comes last alphabetically
Removed _book and _bookdown_files directories since they are stored at https://github.com/ismayc/thesisdown_book/tree/gh-pages

thesisdown 0.0.1