Adding a basic custom config file

* Also adding in a logger
* Added a sample for custom config
* Saving a png now creates _output

lib/squib.rb

@@ -1,4 +1,14 @@
+require 'logger'
 require 'squib/version'
 require 'squib/commands/new'
 require 'squib/deck'
-require 'squib/card'
+require 'squib/card'
+
+module Squib
+
+  def logger
+    @logger ||= Logger.new(STDOUT)
+  end
+  module_function :logger
+  
+end

lib/squib/api/save.rb

@@ -8,7 +8,7 @@ module Squib
     end
     
     def save_png(range: :all, dir: "_output", prefix: 'card_')
-      range = rangeify(range)
+      range = rangeify(range); dir = dirify(dir, allow_create: true)
       range.each { |i| @cards[i].save_png(i, dir, prefix) }
     end
 

lib/squib/deck.rb

@@ -1,3 +1,4 @@
+require 'yaml'
 require 'squib/card'
 require 'squib/input_helpers'
 require 'squib/constants'
@@ -11,26 +12,41 @@ module Squib
     attr_reader :cards
     attr_reader :text_hint
 
-    def initialize(width: 825, height: 1125, cards: 1, &block)
+    def initialize(width: 825, height: 1125, cards: 1, config: 'config.yml', &block)
       @width=width; @height=height
       @dpi = 300
       @font = 'Sans 36'
       @cards = []
       cards.times{ @cards << Squib::Card.new(self, width, height) }
+      load_config(config)
       if block_given?
         instance_eval(&block)
       end
     end
 
+    # API: Accesses the array of cards in the deck
+    # @api public
     def [](key)
       @cards[key]
     end
 
-    #For Enumerable
+    # Public: Accesses each card of the array in the deck
+    # @api 
     def each(&block)
       @cards.each { |card| block.call(card) }
     end
 
+    # Internal: Load the configuration file, if exists, 
+    # overriding hardcoded defaults
+    # @api private
+    def load_config(file)
+      if File.exists? file
+        if config = YAML.load_file(file)
+          @dpi = config['dpi'].to_i
+        end
+      end
+    end
+
     ##################
     ### PUBLIC API ###
     ##################

samples/custom-config.rb

@@ -0,0 +1,6 @@
+#!/usr/bin/env ruby
+require 'squib'
+
+Squib::Deck.new(config: 'custom-config.yml') do
+	
+end

samples/custom-config.yml

@@ -0,0 +1 @@
+dpi: 300