Merge pull request #1716 from TimothyGu/globals-doc

Document `globals` option
Update Readme_zh-cn.md

line 342 , <p> tag is wrong
layout: Remove commented out cruft

See https://github.com/jadejs/jade/pull/1703#issuecomment-62389102
layout: Add "contributed by many others"

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Better `pretty` documentation

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Pin to less <2.0.0

transformer doesn't support less 2.0.0 yet.

Temporarily fixes the build.

See #1718.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Merge pull request #1729 from TimothyGu/less

Pin to less <2.0.0
Merge pull request #1726 from TimothyGu/pretty

Better `pretty` documentation.
Merge pull request #1725 from TimothyGu/contrib

layout: Add "contributed by many others".
Add warning if a data attribute value contains ampersand(s)

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Merge pull request #1735 from jadejs/ampersand-warn

Add warning if a data attribute value contains ampersand(s)
Merge pull request #1736 from skylerzhang/master

Update Readme_zh-cn.md
Warn about future change to ISO 8601 style dates

See #1062, #1677.

Based on a patch by Forbes Lindesay <forbes@lindesay.co.uk>.

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Merge pull request #1734 from jadejs/date-warn-all

Warn about future change to ISO 8601 style dates
Fix empty text-only block case

close https://github.com/jadejs/jade/issues/1743
Merge pull request #1746 from rlidwka/text-block-stuff

Fix empty text-only block case.
Begin internationalization

Begin moving all strings in the documentation into a single "lang" file
which can be translated.
Finish separating out strings