Add hologram init, and more error checking with better messaging
Use underscores to signify assets that should not be copied
Treat _header.html and _footer.html as ERB templates
Update default header to show ERB-ness
Update getting started docs, and template docs
Merge pull request #40 from jdcantrell/init

Add hologram init, and more error checking with better messaging
Merge pull request #41 from jdcantrell/skip-files

Do not copy files that being with an underscore in the documentation assets folder
Just some general documentation maintenance

- fix typos
- edit for consistency
- remove some duplicate/unnecessary comments

cc @jcantrell
Update README.md
Update readme
Re-add support for header.html and footer.html
Fix an issue when generating regular markdown pages
Merge pull request #42 from jdcantrell/erb

Treat _header.html and _footer.html as ERB templates