<commit_before># Contributing to Rusoto

### Setting up build environment (only needed once)

Install Rust **1.8.0** or later - http://www.rust-lang.org/

Check out code from github.

If you're on OSX, you'll probably need a new version of openssl.  Run `brew install openssl`.

Do one of the following to make rust-openssl see the Homebrew-installed OpenSSL:

1.  Run `brew link --force openssl`.
2.  Run:

    ``` bash
    export OPENSSL_INCLUDE_DIR=`brew --prefix openssl`/include
    export OPENSSL_LIB_DIR=`brew --prefix openssl`/lib
    ```

Set up AWS credentials: environment variables (export AWS_ACCESS_KEY_ID and
AWS_SECRET_ACCESS_KEY), populate the ~/.aws/credentials file, or use an<commit_msg>Updates contributing doc with required version of Rust.<commit_after># Contributing to Rusoto

### Setting up build environment (only needed once)

Install Rust **1.9.0** or later - http://www.rust-lang.org/

Check out code from github.

If you're on OSX, you'll probably need a new version of openssl.  Run `brew install openssl`.

Do one of the following to make rust-openssl see the Homebrew-installed OpenSSL:

1.  Run `brew link --force openssl`.
2.  Run:

    ``` bash
    export OPENSSL_INCLUDE_DIR=`brew --prefix openssl`/include
    export OPENSSL_LIB_DIR=`brew --prefix openssl`/lib
    ```

Set up AWS credentials: environment variables (export AWS_ACCESS_KEY_ID and
AWS_SECRET_ACCESS_KEY), populate the ~/.aws/credentials file, or use an
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