Merge branch 'gh-pages' into unified-links

## Starter Files

The `bin/lesson_initialize.py` script creates files that need to be customized for each lesson.

The `bin/lesson_initialize.py` script creates files that need to be customized for each lesson:

### `CONTRIBUTING.md`

Contribution guidelines.

`CONTRIBUTING.md`

:   Contribution guidelines.

    The `issues` and `repo` links at the bottom of the file must be changed

    to match the URLs of the lesson:

    look for uses of `FIXME`.

### `_config.yml`

The [Jekyll][jekyll] configuration file.

`_config.yml`

:   The [Jekyll][jekyll] configuration file.

    This must be edited so that its links and other settings are correct for this lesson.

    *   `carpentry` should be either "dc" (for Data Carpentry) or "swc" (for Software Carpentry).

    *   `title` is the title of your lesson,

        e.g.,

        "Defence Against the Dark Arts".

    *   `email` is the contact email address for the lesson.

### `CITATION`

`CITATION`

:   A plain text file explaining how to cite this lesson.

A plain text file explaining how to cite this lesson.

### `AUTHORS`

A plain text file listing the names of the lesson's authors.

### `index.md`

The home page for the lesson.

`AUTHORS`

:   A plain text file listing the names of the lesson's authors.

`index.md`

:   The home page for the lesson.

    1.  It must use the `lesson` layout.

    2.  It must *not* have a `title` field in its [YAML][yaml] header.

    3.  It must open with a few paragraphs of explanatory text.

        which generates the syllabus for the lesson

        from the metadata in its episodes.

### `reference.md`

A reference guide for the lesson.

`reference.md`

:   A reference guide for the lesson.

    The template will automatically generate a summary of the episodes' key points.

    1.  It must use the `reference` layout.

    2.  Its title must be `"Reference"`.

    3.  Its permalink must be `/reference/`.

    4.  It should include a glossary, laid out as a description list.

    5.  It may include other material as appropriate.

The template will automatically generate a summary of the episodes' key points.

### `setup.md`

Detailed setup instructions for the lesson.

1.  It must use the `page` layout.

2.  Its title must be `"Setup"`.

3.  Its permalink must be `/setup/`.

4.  It should include whatever setup instructions are required.

`setup.md`

:   Detailed setup instructions for the lesson.

    Note that we usually divide setup instructions by platform,

    e.g.,

    include level-2 headings for Windows, Mac OS X, and Linux

    with instructions for each.

    The [workshop template]({{ site.workshop_repo }})

    links to the setup instructions for core lessons.

    1.  It must use the `page` layout.

    2.  Its title must be `"Setup"`.

    3.  Its permalink must be `/setup/`.

    4.  It should include whatever setup instructions are required.

### `_extras/about.md`

General notes about this lesson.

`_extras/about.md`

:   General notes about this lesson.

    This page includes brief descriptions of Software Carpentry and Data Carpentry,

    and is a good place to put institutional acknowledgments.

### `_extras/discussion.md`

General discussion of the lesson contents for learners who wish to know more:

`_extras/discussion.md`

:   General discussion of the lesson contents for learners who wish to know more:

    This page normally includes links to further reading

    and/or brief discussion of more advanced topics.

    1.  It must use the `page` layout.

    2.  Its title must be `"Discussion"`.

    3.  Its permalink must be `/discuss/`.

    4.  It may include whatever content the author thinks appropriate.

This page normally includes links to further reading

and/or brief discussion of more advanced topics.

### `_extra/figures.md` and `_includes/all_figures.html`

Does nothing but include `_includes/all_figures.html`,

`_extra/figures.md` and `_includes/all_figures.html`

:   Does nothing but include `_includes/all_figures.html`,

    which is (re)generated by `make lesson-figures`.

    This page displays all the images referenced by all of the episodes,

    in order,

    so that instructors can scroll through them while teaching.

### `_extras/guide.md`

The instructors' guide for the lesson.

`_extras/guide.md`

:   The instructors' guide for the lesson.

    This page records tips and warnings from people who have taught the lesson.

    1.  It must use the `page` layout.

    2.  Its title must be `"Instructors' Guide"`.

    3.  Its permalink must be `/guide/`.

    4.  It may include whatever content the author thinks appropriate.

This page records tips and warnings from people who have taught the lesson.

{% include links.md %}