Fix examples: comments start with #, not //

See https://github.com/prometheus/prometheus/issues/683

Fix rule_checker example

-ruleFile doesn’t exist, and the existing -rule-file flag is deprecated in https://github.com/prometheus/prometheus/commit/c4e762adbf6ee7f8fd24af8dc584a64d14974a7e

Update information about binary releases.

Add README.md to make the generated repository point here.

Fixes prometheus/prometheus.github.io#2.

Fix typo.

Document Grafana integration.

Mention more third-party exporters and integrations.

Updated doc for prometheus/prometheus#649 docker image refactoring PR

Add blog post with the various online posts we're aware of.

Exclude Boxever wrapup, as we're already listing all those posts.

Signed-off-by: Steve Durrheimer <s.durrheimer@gmail.com>

[WIP] Add initial blog code.

This is based roughly on

  http://clarkdave.net/2012/02/building-a-static-blog-with-nanoc/

with a lot of small modifications to make it fit the existing docs site.

Blog posts should be added as:

    content/blog/YYYY-MM-DD-post-title.md

They need to state the title, kind, created_at, and author in the
frontmatter, e.g.:

    ---
    title: "This is a blog post title"
    created_at: 2015-04-22
    kind: article
    author: Julius Volz
    ---

Add docs for stddev and stdvar.

Add sqrt() function

Add Graphite to 3rd party exporters

This fixes https://github.com/prometheus/docs/issues/60.

Document histograms in the exposition format and new storage flags.

Adjust rule checker docs to changed behavior

Link to "Client Library Guidelines" doc.

Link to new exporters and client libraries.