Merge pull request #110 from heynemann/master

Support for git-archive and git-show
contributors: added Bernardo Heynemann.
bump to 0.4.0.
repository: support a different host for readonly url

Fixes tsuru/tsuru#807.
webserver: bump to 0.4.1
travis: remove go 1.1 and add go 1.3
docs/config: add documentation for the readonly-host setting

Also improve the structure of the document.
requirements: remove fabric and circus
getContent integration testing
Merge pull request #111 from heynemann/master

Support ls-tree as an api in gandalf
fixing git user when running tests
Merge branch 'master' of github.com:tsuru/gandalf

Conflicts:
	repository/mocks.go
pretty code going down the street
Merge pull request #112 from guilhermef/master

getContent integration testing
Added extra repository tests
Verifying whether repository exists before running git commands