make choice of simplecov explicit

Author: PragTob

Gemfile

@@ -6,12 +6,9 @@ gemspec
 
 gem "rake", ">= 11"
 
-# Use local copy of simplecov in development when checked out, fetch from git otherwise
-if File.directory?(File.dirname(__FILE__) + "/../simplecov")
-  gem "simplecov", :path => File.dirname(__FILE__) + "/../simplecov"
-else
-  gem "simplecov", :github => "simplecov-ruby/simplecov"
-end
+# Use local copy of simplecov in development if you want to
+# gem "simplecov", :path => File.dirname(__FILE__) + "/../simplecov"
+gem "simplecov", :github => "simplecov-ruby/simplecov"
 
 group :test do
   gem "minitest"