elixir-lang instructions

Contributing improvements or bug fixes

1) **Fork and Clone this Repository**
[Fork this repository](https://github.com/elixir-lang/elixir-lang.github.com/fork), and Create a local clone of your fork.  You may want to read the [Instructions on how to do that](https://help.github.com/articles/fork-a-repo/).

2) **Install [Ruby](https://www.ruby-lang.org/)**
To setup a development enviroment locally, you need to have Ruby installed. If you are running a Mac, it's probably installed. Run in your shell `ruby --version`.  Your Ruby version should begin with `1.9.3` or `2.0.0`. You can follow [this guide](https://www.ruby-lang.org/en/documentation/installation/) if you need to install it.

3) **Install  [Bundler](http://bundler.io/)**
```bash
gem install bundler
```

4) **Install Project Dependencies**
Once you have Bundler installed, `cd` into the forked project and download and install all the necessary dependencies by running:
```bash
$ bundle install
```
This will install `jekyll` and the `github-pages` package, which will install all the same packages with the same versions that are run in GitHub server, so we can test locally, as if we were [running live](http://elixir-lang.org).

5) **Run Jekyll**
Run a development server (with live-reloading on) on http://localhost:4000/
```bash
$ bundle exec jekyll serve
```

6) **Make your Changes and Test Them**
Now you're ready to make your changes! Be sure to test the changes locally using
the development server. Once you're done with your changes, [push those changes
to your fork](https://help.github.com/articles/pushing-to-a-remote/) and then [submit a **pull request**](https://help.github.com/articles/using-pull-requests/).