Adding default_spacing option

Author: merbjedi

README.md

@@ -77,6 +77,7 @@ Configuration of `sprite` is done via `config/sprite.yml`. It allows you to set
   - `public_path:` defines the root folder where static assets live (defaults to `public/`)
   - `sprites_class:` defines the class name that gets added to all sprite stylesheet rules (defaults to `sprites`)
   - `default_format:` defines the default file image format of the generated files. (defaults to `png`)
+  - `default_spacing:` defines the default pixel spacing between sprites (defaults to 0)
   - `class_separator:` used to generated the class name by separating the image name and sprite name (defaults to `-`)
 
 * `images:` section provides an array of configurations which define which image files are built, and where they get their sprites from. each image setup provides the following config options:
@@ -101,6 +102,7 @@ All image and style paths should be set relative to the public folder (which is
       sprites_class: 'sprites'
       class_separator: '-'
       default_format: png
+      default_spacing: 50
 
     # defines what sprite collections get created
     images:    

VERSION

@@ -1 +1 @@
-0.1.5
+0.1.6

lib/sprite/builder.rb

@@ -59,7 +59,7 @@ def write_image(image)
 
       name = image['name']
       format = image['format'] || config["default_format"]
-      spaced_by = image['spaced_by'] || 0
+      spaced_by = image['spaced_by'] || config["default_spacing"] || 0
 
       combiner = ImageCombiner.new
 
@@ -108,6 +108,7 @@ def set_config_defaults
       @config['default_format']     ||= 'png'
       @config['class_separator']    ||= '-'
       @config["sprites_class"]      ||= 'sprites'
+      @config["default_spacing"]    ||= 0
     end
 
     # if no image configs are detected, set some intelligent defaults

spec/sprite/config_spec.rb

@@ -8,7 +8,7 @@
     end 
 
     it "should load the settings keys from file" do
-      @sprite.config.keys.size.should == 8
+      @sprite.config.keys.size.should == 9
     end
 
     it "should load the image keys from file" do