Update DevelopmentSetup.md

I had to make this change locally to get DotCi set up. I'm not sure if this is a Groupon specific configuration.
[GH 10] support proxying linked docker container into running docker container if socat utility is installed in the image
Use autocomplete box for github branches when kicking of builds
manually.
Change pull request branch name format
Merge pull request #40 from bkochendorfer/patch-2

Update DevelopmentSetup.md
[maven-release-plugin] prepare release DotCi-1.2.0
[maven-release-plugin] prepare for next development iteration
Add changelog
Update CHANGELOG.md
Update github offline token when a user logsin

It is recommended that offline tokens be updated on login as github can
choose to give you a new one whenever they like( scope changes for
example).
Merge pull request #41 from bkochendorfer/socat_link

[GH 10] support proxying linked docker container....
Update Usage.md
Merge pull request #47 from bkochendorfer/patch-3

Update Usage.md
Remove deprecated class
Update access tokens collection; dont replace existing content.
Check if pr number is availble in env variable
Remove unnecessary files.
Show error message on new dotci job page if github authentication is
not configured.
Upgrade to newer version of oauth-plugin; this one fires security events
Show error message on new job page if security is not configured.