module Github::Repos::Downloads

def create_download(user, repo, params={})


POST /repos/:user/:repo/downloads

Response from this method is to be used in #upload method.
You must first create a new download resource using this method.
Creating a new download is a two step process. 
def create_download(user, repo, params={})
  _normalize_params_keys(params)
  raise ArgumentError, "expected following inputs to the method: #{REQUIRED_INPUTS.join(', ')}" unless _valid_inputs(REQUIRED_PARAMS, params)
  _filter_params_keys(VALID_PARAMS, params)
  post("/repos/#{user}/#{repo}/downloads", params)
end

def delete_download(user, repo, download_id)


DELETE /repos/:user/:repo/downloads/:id

Delete download from a repository 
def delete_download(user, repo, download_id)
  delete("/repos/#{user}/#{repo}/downloads/#{download_id}")
end

def downloads(user, repo)


GET /repos/:user/:repo/downloads

List downloads for a repository 
def downloads(user, repo)
  get("/repos/#{user}/#{repo}/downloads")
end

def get_download(user, repo, download_id)


GET /repos/:user/:repo/downloads/:id

Get a single download 
def get_download(user, repo, download_id)
  get("/repos/#{user}/#{repo}/downloads/#{download_id}")
end

def upload(result, file)


the response object as an argument to upload method.
Github::Repos::Downloads#create. This can be done by passing
Upload a file to Amazon, using the reponse instance from 
def upload(result, file)
  REQUIRED_S3_PARAMS.each do |key|
    raise ArgumentError, "expected following keys: #{REQUIRED_S3_PARAMS.join(', ')}" unless result.respond_to?(key) 
  end
  
  # TODO use ordered hash if Ruby < 1.9
  mapped_params = {
    "key"                   => result.path,
    "acl"                   => result.acl,
    "success_action_status" => 201,
    "Filename"              => result.name,
    "AWSAccessKeyId" => result.accesskeyid,
    "Policy" => result.policy,
    "Signature" => result.signature,
    "Content-Type" => result.mime_type,
    "file" => file 
  }
  
  post(result.s3_url, mapped_params)
end