add vendoring with go dep

vendor/github.com/vmware/govmomi/CONTRIBUTING.md

@@ -0,0 +1,101 @@
+# Contributing to govmomi
+
+## Getting started
+
+First, fork the repository on GitHub to your personal account.
+
+Note that _GOPATH_ can be any directory, the example below uses _$HOME/govmomi_.
+Change _$USER_ below to your github username if they are not the same.
+
+``` shell
+export GOPATH=$HOME/govmomi
+go get github.com/vmware/govmomi
+cd $GOPATH/src/github.com/vmware/govmomi
+git config push.default nothing # anything to avoid pushing to vmware/govmomi by default
+git remote rename origin vmware
+git remote add $USER git@github.com:$USER/govmomi.git
+git fetch $USER
+```
+
+## Installing from source
+
+Compile the govmomi libraries and install govc using:
+
+``` shell
+go install -v github.com/vmware/govmomi/govc
+```
+
+Note that **govc/build.sh** is only used for building release binaries.
+
+## Contribution flow
+
+This is a rough outline of what a contributor's workflow looks like:
+
+- Create a topic branch from where you want to base your work.
+- Make commits of logical units.
+- Make sure your commit messages are in the proper format (see below).
+- Update CHANGELOG.md and/or govc/CHANGELOG.md when appropriate.
+- Push your changes to a topic branch in your fork of the repository.
+- Submit a pull request to vmware/govmomi.
+
+Example:
+
+``` shell
+git checkout -b my-new-feature vmware/master
+git commit -a
+git push $USER my-new-feature
+```
+
+### Stay in sync with upstream
+
+When your branch gets out of sync with the vmware/master branch, use the following to update:
+
+``` shell
+git checkout my-new-feature
+git fetch -a
+git rebase vmware/master
+git push --force-with-lease $USER my-new-feature
+```
+
+### Updating pull requests
+
+If your PR fails to pass CI or needs changes based on code review, you'll most likely want to squash these changes into
+existing commits.
+
+If your pull request contains a single commit or your changes are related to the most recent commit, you can simply
+amend the commit.
+
+``` shell
+git add .
+git commit --amend
+git push --force-with-lease $USER my-new-feature
+```
+
+If you need to squash changes into an earlier commit, you can use:
+
+``` shell
+git add .
+git commit --fixup <commit>
+git rebase -i --autosquash vmware/master
+git push --force-with-lease $USER my-new-feature
+```
+
+Be sure to add a comment to the PR indicating your new changes are ready to review, as github does not generate a
+notification when you git push.
+
+### Code style
+
+The coding style suggested by the Golang community is used in govmomi. See the
+[style doc](https://github.com/golang/go/wiki/CodeReviewComments) for details.
+
+Try to limit column width to 120 characters for both code and markdown documents such as this one.
+
+### Format of the Commit Message
+
+We follow the conventions on [How to Write a Git Commit Message](http://chris.beams.io/posts/git-commit/).
+
+Be sure to include any related GitHub issue references in the commit message.
+
+## Reporting Bugs and Creating Issues
+
+When opening a new issue, try to roughly follow the commit message format conventions above.