Use git source in Gemfile of example (Test-driven)

Author: matsubara0507

examples/simple_script/Gemfile

@@ -5,5 +5,5 @@ source 'https://rubygems.org'
 gem 'awesome_print'
 gem 'colored2'
 gem 'rspec', '~> 3.7.0'
-gem 'rspec-its'
+gem 'rspec-its', github: "rspec/rspec-its", ref: "3d36b4a7b004ffa204a0e392f27c8b6b0b674ecf" # v1.3.0
 gem 'rubocop'

examples/simple_script/Gemfile.lock

@@ -1,3 +1,12 @@
+GIT
+  remote: https://github.com/rspec/rspec-its.git
+  revision: 3d36b4a7b004ffa204a0e392f27c8b6b0b674ecf
+  ref: 3d36b4a7b004ffa204a0e392f27c8b6b0b674ecf
+  specs:
+    rspec-its (1.3.0)
+      rspec-core (>= 3.0.0)
+      rspec-expectations (>= 3.0.0)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -20,9 +29,6 @@ GEM
     rspec-expectations (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
-    rspec-its (1.3.0)
-      rspec-core (>= 3.0.0)
-      rspec-expectations (>= 3.0.0)
     rspec-mocks (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
@@ -48,7 +54,7 @@ DEPENDENCIES
   awesome_print
   colored2
   rspec (~> 3.7.0)
-  rspec-its
+  rspec-its!
   rubocop
 
 BUNDLED WITH