Fixed broken link to github training material site
Fix syntax issue on Templates page with `include` example.

Fixes #2256 for the time being.
Merge pull request #2257 from stevenspasbo/master
Update history to reflect merge of #2257 [ci skip]
Move link around for GitHub training site & source.

#2257.
Added feature for creating draft posts.

Default usage is:

$ jekyll draft "Some new draft post"

which will create the file ./_drafts/some-new-draft-post.markdown with some default front-matter.

Options incude:

* -f / --force                       overwrite an existing draft
* -t TYPE / --type TYPE              specify the extension, e.g. markdown, md, textile, etc
* -l LAYOUT / --layout LAYOUT        specify the layout, e.g. post, about, etc