Rename variable of frame interval configuration (frame_interval to frame_interval_ms)

Author: gongo

README.md

@@ -49,14 +49,14 @@ You can do to customize a screenshot.
 
 ```ruby
 Gnawrnip.configure do |c|
-  c.frame_interval = 1000 # milliseconds
+  c.frame_interval_ms = 1000 # milliseconds
   c.make_animation = true
   c.max_frame_size = 1024 # pixel
 end
 ```
 
 * `make_animation` (Boolean) Whether to make animation GIF. (Default: true)
-* `frame_interval` (Integer) A time (millisecond) between each image in an animation. Default is `1000` (1sec)
+* `frame_interval_ms` (Integer) A time (millisecond) between each image in an animation. Default is `1000`.
     * This option is enabled only when the `make_animation = true`.
 * `max_frame_size` (Integer) Maximum size that use to resize of image.
     * If given, it resize the image to fit to this value.

example/spec/spec_helper.rb

@@ -21,7 +21,7 @@
 Capybara.javascript_driver = :selenium
 
 Gnawrnip.configure do |c|
-  c.frame_interval = 1000 # milliseconds
-  c.make_animation = true
-  c.max_frame_size = 1024 # pixel
+  c.frame_interval_ms = 1000
+  c.make_animation    = true
+  c.max_frame_size    = 1024 # pixel
 end

lib/gnawrnip.rb

@@ -8,7 +8,7 @@ class << self
     #
     # [Integer] Time (millisecond) between each image in animation
     #
-    attr_accessor :frame_interval
+    attr_accessor :frame_interval_ms
 
     #
     # [Boolean] Whether to make animation GIF
@@ -59,7 +59,7 @@ def publisher_driver=(driver)
 end
 
 Gnawrnip.configure do |c|
-  c.frame_interval = 1000
-  c.make_animation = true
-  c.max_frame_size = nil
+  c.frame_interval_ms = 1000
+  c.make_animation    = true
+  c.max_frame_size    = nil
 end