Document changes() and resets() functions.

Add memcached-exporter to list of exporters.

Two minor docs improvements.

This is relevant for users building directly from the GitHub repo.

Fixes https://github.com/prometheus/docs/issues/91 .

Fixes https://github.com/prometheus/docs/issues/82 .

Remove duplicated reloading docs

Change configuration example URL

Add basic auth and reloading to configuration docs

Add config docs for file discovery

Add consul SD documentation

Adjust getting started section to new config format

Fix docs menu titles and homepage jumbotron.

Set HTML title to current page's title

Add MySQL and CouchDB exporters.

Remove comment about hash collisions

Change config docs to YAML, adjust to changes.

Fix typo.

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.