Add verbose output to docker build

Verbose output is enabled by default and
the flag -q can be used to suppress the verbose output.
Fix buildfile tests after rebase
Revert changes from PR 1030

With streaming output of the build
changes in 1030 are no longer required.
Add param to api docs for verbose build output
updated the help commands on a few commands that were not correct
updated the rmi command docs, the had typos
Bump version to 0.5.0
Merge -b and -v options
Update docs
Update repository information.
Always stop the opposite goroutine in network_proxy.go (closes #1213)
fix docker rmi via id
updated with notes from @vieux
Small changes in changelog wording
Merge pull request #1222 from lopter/master

Always stop the opposite goroutine in network_proxy.go (closes #1213)
Merge pull request #1212 from dotcloud/merge_v_b_options

* Runtime: Merge -b and -v options
Changed date on changelog
Merge branch 'master' of https://github.com/kencochrane/docker into kencochrane-master
change rm usage in docs
Merge pull request #1194 from crosbymichael/build-verbose

* Builder: Add verbose output to docker build