Rails Form Helper for Bootstrap META tag

Creates the meta tag for Bootstrap with the specified parameters:

    <%= viewport_meta_tag %>

Renders:

    <meta content="width=device-width,initial-scale=1.0" name="viewport" />

You can change the content value by passing a hash as an argument:

    <%= viewport_meta_tag(:maximum_scale => "1.0") %>

Renders:

    <meta content="width=device-width,initial-scale=1.0,maximum-scale=1.0" name="viewport" />