PROCESS: Use the same gems locally and on TravisCI.

Author: benel

.gitignore

@@ -3,6 +3,7 @@
 # dependencies
 node_modules
 package-lock.json
+Gemfile.lock
 
 # production
 build

.travis.yml

@@ -11,7 +11,7 @@ cache:
 
 install:
   - npm install
-  - gem install cucumber rspec capybara selenium-webdriver chromedriver-helper:1.2
+  - bundle install
 
 script:
   - npm run build

Gemfile

@@ -0,0 +1,7 @@
+source "https://rubygems.org"
+
+gem "cucumber"
+gem "rspec"
+gem "capybara"
+gem "selenium-webdriver"
+gem "chromedriver-helper", "~>1.2"

README.md

@@ -50,7 +50,7 @@ Build for production
 Tests requirements
 ------------------
 
-    gem install cucumber rspec capybara selenium-webdriver chromedriver-helper
+    bundle install
 
 If it fails on macOS because of `libffi`, it can be fixed by brewing and linking an up-to-date version of the library (at your own risk).