Update to rspec 3 from 2 to resolve exists error

To resolve the following error:
rspec-core-2.14.6/lib/rspec/core/ruby_project.rb:27:in `block in
find_first_parent_containing': undefined method `exists?' for class File
(NoMethodError)

        ascend_until {|path| File.exists?(File.join(path, dir))}
                                    ^^^^^^^^
Did you mean?  exist?

I ran bundle update rspec and updated the spec_helper.rb file to use the
new syntax for color (from `config.color_enabled` to `config.color`) and
this resolved the error.  There are still many deprecation warnings
which will need to be resolved in the future, but the tests are now
running/passing.

Author: mrblum

Gemfile.lock

@@ -3,20 +3,25 @@ GEM
   specs:
     asciidoctor (2.0.17)
     concurrent-ruby (1.1.10)
-    diff-lcs (1.2.4)
+    diff-lcs (1.6.0)
     mini_portile2 (2.8.8)
     nokogiri (1.18.3)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     racc (1.8.1)
-    rspec (2.14.1)
-      rspec-core (~> 2.14.0)
-      rspec-expectations (~> 2.14.0)
-      rspec-mocks (~> 2.14.0)
-    rspec-core (2.14.6)
-    rspec-expectations (2.14.3)
-      diff-lcs (>= 1.1.3, < 2.0)
-    rspec-mocks (2.14.3)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.3)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
     tilt (1.4.1)
 
 PLATFORMS

spec/spec_helper.rb

@@ -7,7 +7,7 @@
 Bundler.require(:test)
 
 RSpec.configure do |config|
-  config.color_enabled = true
+  config.color = true
   config.order = "random"
 end