onesky_upload.rb

#!/usr/local/bin/ruby

## Created by Tim Malseed 16/07/2016
## This script depends on `onesky-ruby`
## Run gem install onesky-ruby

require 'onesky'

API_PUBLIC_KEY = 'your_public_key'
API_SECRET_KEY = 'your_secret_key'
PATH_TO_FILE = 'some/path/to/your/strings/file.ext'

# Create client
client = Onesky::Client.new(API_PUBLIC_KEY, API_SECRET_KEY)

# Get project info
project_groups = JSON.parse(client.list_project_group)
project_group_id = project_groups['data'][0]['id']
projects = JSON.parse(client.list_project project_group_id)
project_id = projects['data'][0]['id']
project = client.project(project_id)

# Upload

print 'Uploading...'

resp = project.upload_file(file: PATH_TO_FILE, file_format: 'ANDROID_XML', locale: 'en', is_keeping_all_strings: false)
resp.code # => 201

print "\nUpload complete. Response: #{resp.code}\n"