Report error while fetching network stats.
Merge pull request #341 from vmarmol/err

Report error while fetching network stats.
Added a Filesystem gauge
Added HTTP Auth and HTTP Digest authentication #302
Cleanup and minor fix for digest
Added name to the AUTHORS file
Made the progress bars and text dynamic #263
Merge pull request #344 from incredlabs/fsgauge

Added a Filesystem gauge, enhancement #339
Updated the humanize function
Ran gofmt and made the various changes suggested
Merge pull request #346 from incredlabs/updatebars

Made the progress bars and text dynamic #263
Added log info for auth and digest file
Merge pull request #345 from incredlabs/httpauth

Added HTTP Auth and HTTP Digest authentication #302
Updating docs for the Web UI authentication feature
Merge pull request #348 from incredlabs/httpdocs

Update web UI docs to reflect authentication feature
Try to detect systemd by checking for its named cgroup hierarchy.

Fixes #342
Merge pull request #349 from vmarmol/systemd

Try to detect systemd by checking for its named cgroup hierarchy.
Bump minimum docker supported version to 1.0.
Add a validation handler to check cadvisor's underlying dependencies.