Make color_enabled consistent (#167)

Disabling color only applies to the diff, not the header and the key. Disabling color is needed for my team, because we use CircleCI which can show color sometimes, and remove it at other times (I believe based on the length of the log). And in the later case, we're seeing ansi color codes. I have confirmed the change proposed in #82 allows us to disable color in all of the output.

Author: tradiff

lib/super_diff/rspec/monkey_patches.rb

@@ -72,7 +72,7 @@ def console_code_for(code_or_symbol)
 
           # Patch so it does not apply a color if code_or_symbol is nil
           def wrap(text, code_or_symbol)
-            if RSpec.configuration.color_enabled? && code = console_code_for(code_or_symbol)
+            if SuperDiff.configuration.color_enabled? && code = console_code_for(code_or_symbol)
               "\e[#{code}m#{text}\e[0m"
             else
               text

support/test_plan.rb

@@ -156,10 +156,6 @@ def run_test_with_libraries(*libraries)
       option_parser.parse!
     end
 
-    RSpec.configure do |config|
-      config.color_mode = color_enabled? ? :on : :off
-    end
-
     SuperDiff.configuration.merge!(
       configuration.merge(color_enabled: color_enabled?)
     )