#189 Fix the env in TTY mode
Improve document <title>'s for the docs.
Merge pull request #186 from pbogdan/fix-docs-document-title

Improve document <title>'s for the docs.
Merge pull request #190 from dotcloud/189-broken_env_tty_mode-fix

#189 Fix the env in TTY mode
Fixed a misspelled command in the docs.

`vagrant up` command was misspelled as `vagant up`.
When doing a reverse-lookup of an image's tag, if the image has multiple tags, the first tag in alphabetical order will be used
Merge branch 'master' of ssh://github.com/dotcloud/docker
Merge pull request #193 from vivekagr/master

Fixed a misspelled command in the docs.
Simplify id generation

Instead of using a SHA-256 of a random number, hex encode 16 bytes
of random data from crypto/rand (sourced from /dev/urandom).
Remove extraneous rand.Seed