Add support for Labelary API Business SaaS Endpoint

README.md

@@ -45,6 +45,7 @@ Labelary.configure do |config|
   config.index = 0 # optional, for picking a label when multiple are present in the ZPL (usually 0)
   config.content_type = 'image/png' # or 'application/pdf', specifies the content type of the returned label
   config.url = 'http://api.labelary.com' # optional (for self hosted)
+  config.api_key = 'api_key' # optional (for Labelary Business Saas, requires url to be set for the Paid API endpoint)
 end
 ```
 

lib/labelary/client.rb

@@ -8,6 +8,7 @@ def connection
       @connection ||= Faraday.new(url: config.url) do |faraday|
         faraday.request :multipart
         faraday.response :json, content_type: /\bjson$/
+        faraday.headers['X-API-Key'] = config.api_key if config.api_key
 
         faraday.adapter config.http_adapter
       end

lib/labelary/configuration.rb

@@ -14,6 +14,7 @@ def self.configure
   class Configuration
     attr_accessor *[
       :url,
+      :api_key,
       :http_adapter,
       :dpmm,
       :width,
@@ -26,6 +27,7 @@ class Configuration
     def initialize
       @url          = 'http://api.labelary.com'
       @http_adapter = Faraday.default_adapter
+      @api_key      = nil
       @dpmm         = nil
       @width        = nil
       @height       = nil