Copy over some of the core markdown from serving. (#2)

Editted for content.

CONTRIBUTING.md

@@ -0,0 +1,5 @@
+# Contribution guidelines
+
+So you want to hack on Knative `pkg`? Yay! Please refer to Knative's overall
+[contribution guidelines](https://github.com/knative/docs/blob/master/community/CONTRIBUTING.md)
+to find out how you can help.

DEVELOPMENT.md

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+# Development
+
+This doc explains how to setup a development environment so you can get started
+[contributing](https://github.com/knative/docs/blob/master/community/CONTRIBUTING.md)
+to Knative `pkg`. Also take a look at:
+
+* [The pull request workflow](https://github.com/knative/docs/blob/master/community/CONTRIBUTING.md#pull-requests)
+
+## Getting started
+
+1. Create [a GitHub account](https://github.com/join)
+1. Setup [GitHub access via
+   SSH](https://help.github.com/articles/connecting-to-github-with-ssh/)
+1. Install [requirements](#requirements)
+1. Set up your [shell environment](#environment-setup)
+1. [Create and checkout a repo fork](#checkout-your-fork)
+
+Before submitting a PR, see also [CONTRIBUTING.md](./CONTRIBUTING.md).
+
+### Requirements
+
+You must install these tools:
+
+1. [`go`](https://golang.org/doc/install): The language Knative `pkg` is built in
+1. [`git`](https://help.github.com/articles/set-up-git/): For source control
+1. [`dep`](https://github.com/golang/dep): For managing external dependencies.
+
+### Environment setup
+
+To get started you'll need to set these environment variables (we recommend
+adding them to your `.bashrc`):
+
+1. `GOPATH`: If you don't have one, simply pick a directory and add
+`export GOPATH=...`
+1. `$GOPATH/bin` on `PATH`: This is so that tooling installed via `go get` will
+work properly.
+
+`.bashrc` example:
+
+```shell
+export GOPATH="$HOME/go"
+export PATH="${PATH}:${GOPATH}/bin"
+```
+
+### Checkout your fork
+
+The Go tools require that you clone the repository to the `src/github.com/knative/pkg` directory
+in your [`GOPATH`](https://github.com/golang/go/wiki/SettingGOPATH).
+
+To check out this repository:
+
+1. Create your own [fork of this
+  repo](https://help.github.com/articles/fork-a-repo/)
+1. Clone it to your machine:
+
+  ```shell
+  mkdir -p ${GOPATH}/src/github.com/knative
+  cd ${GOPATH}/src/github.com/knative
+  git clone git@github.com:${YOUR_GITHUB_USERNAME}/pkg.git
+  cd pkg
+  git remote add upstream git@github.com:knative/pkg.git
+  git remote set-url --push upstream no_push
+  ```
+
+_Adding the `upstream` remote sets you up nicely for regularly [syncing your
+fork](https://help.github.com/articles/syncing-a-fork/)._
+
+Once you reach this point you are ready to do a full build and deploy as described below.

README.md

@@ -1,2 +1,10 @@
-# pkg
-First-party common imports
+# Knative Common Packages
+
+Knative `pkg` provides a place for sharing common Knative packages across
+the Knative repos.
+
+To learn more about Knative, please visit our
+[Knative docs](https://github.com/knative/docs) repository.
+
+If you are interested in contributing, see [CONTRIBUTING.md](./CONTRIBUTING.md)
+and [DEVELOPMENT.md](./DEVELOPMENT.md).

code-of-conduct.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+education, socio-economic status, nationality, personal appearance, race,
+religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior
+may be reported by contacting the project team at
+knative-code-of-conduct@googlegroups.com. All complaints will be reviewed
+and investigated and will result in a response that is deemed
+necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of
+an incident.  Further details of specific enforcement policies may be
+posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+