Fixing simplecov version to fix spec return value issue.

* rspec/rspec-rails#1016
*
https://github.com/colszowka/simplecov/blob/5e2b5b39ef46be1187fde9e5b92f
320be3f21934/README.md

Gemfile

@@ -112,7 +112,7 @@ group :test do
   gem 'database_cleaner'
   gem 'guard-spork'
   gem 'spork'
-  gem 'simplecov', require: false
+  gem 'simplecov', '~> 0.7.1', require: false
 end
 
 group :test do

Gemfile.lock

@@ -168,7 +168,6 @@ GEM
       thread_safe (~> 0.1)
       warden (~> 1.2.3)
     diff-lcs (1.2.5)
-    docile (1.1.3)
     dotenv (0.7.0)
     edit_mode (1.0.0)
       jquery-rails
@@ -368,11 +367,10 @@ GEM
       sprockets (~> 2.8, <= 2.11.0)
       sprockets-rails (~> 2.0)
     sexp_processor (4.4.3)
-    simplecov (0.8.2)
-      docile (~> 1.1.0)
-      multi_json
-      simplecov-html (~> 0.8.0)
-    simplecov-html (0.8.0)
+    simplecov (0.7.1)
+      multi_json (~> 1.0)
+      simplecov-html (~> 0.7.1)
+    simplecov-html (0.7.1)
     sinatra (1.4.5)
       rack (~> 1.4)
       rack-protection (~> 1.4)
@@ -496,7 +494,7 @@ DEPENDENCIES
   redcarpet
   rspec-rails
   sass-rails (>= 3.2.3)
-  simplecov
+  simplecov (~> 0.7.1)
   spork
   therubyracer
   tilt (~> 1.4.1)

Rakefile

@@ -21,6 +21,12 @@ RSpec::Core::RakeTask.new( :spec ) do |t|
   t.fail_on_error = true
 end
 
+# Alternative:
+#
+# task :spec do
+#   exit system("bundle exec rspec ./spec/**/*_spec.rb ./vendor/engines/**/spec/**/*_spec.rb")
+# end
+
 # The default rake task, i.e. when running just `rake`, is `rake spec`.
 #
 task :default => :spec