```ruby
# Activate and configure extensions
# https://middlemanapp.com/advanced/configuration/#configuring-extensions

activate :autoprefixer do |prefix|
  prefix.browsers = "last 2 versions"
end

# Layouts
# https://middlemanapp.com/basics/layouts/

# Per-page layout changes
page '/*.xml', layout: false
page '/*.json', layout: false
page '/*.txt', layout: false

# Build-specific configuration
# https://middlemanapp.com/advanced/configuration/#environment-specific-settings

configure :build do
  activate :asset_hash
  activate :relative_assets
  activate :minify_css
  activate :minify_javascript
end

# Deploy-specific configuration
activate :gh_pages do |gh_pages|
  gh_pages.remote = 'https://github.com/partialconf/partialconf.github.io'
end
```

Deploy with the new origin
user
```ruby
# Activate and configure extensions
# https://middlemanapp.com/advanced/configuration/#configuring-extensions

activate :autoprefixer do |prefix|
  prefix.browsers = "last 2 versions"
end

# Layouts
# https://middlemanapp.com/basics/layouts/

# Per-page layout changes
page '/*.xml', layout: false
page '/*.json', layout: false
page '/*.txt', layout: false

# Build-specific configuration
# https://middlemanapp.com/advanced/configuration/#environment-specific-settings

configure :build do
  activate :asset_hash
  activate :relative_assets
  activate :minify_css
  activate :minify_javascript
end

# Deploy-specific configuration
activate :gh_pages do |gh_pages|
  gh_pages.remote = 'https://github.com/partialconf/2017.partialconf.com'
end
```
assistant