Fix tmp dir never cleanup
add an example of what to expect from docker diff, and what the 3 codes mean
add example for docker history
add example
Tiny typo cleanup
Update to go1.2rc5
gofmt_test
Merge pull request #2724 from SvenDowideit/docker-diff-example

add an example of what to expect from docker diff, and what the 3 codes mean
Merge pull request #2752 from dotcloud/gofmt_test

Go fmt tests
Merge pull request #2742 from rick/patch-1

Tiny typo cleanup
Merge pull request #2726 from SvenDowideit/docker-history-doc

add example for docker history
Merge pull request #2729 from SvenDowideit/docker-info-doc

add example for docker info
Merge pull request #2743 from tianon/go1.2rc5

Update to go1.2rc5
Merge pull request #2718 from dotcloud/fix_tmp_dir_never_cleanup

Fix tmp dir never cleanup