hugo builds no site if there are only drafts

if you run:
hugo
and all of your posts are drafts, no site gets build.
Fix #394 - Docs: add a missing link to the livereload page in the intro
Config changes and Live Reload

I noticed that config file changes do not work with Live Reload feature. This may be "fixed" in future but for now adding a note might avoid confusion.
Added yaml menu example

Added yaml menu example, matching with existing toml example. Also added link to sitewide config page.
Add 'where' template function
switch to new location of goyaml
errors not propagating
Added a note after the script adding potential issues per @franklinwise's feedback
added evaluation for toml for metadataformat date handling