Add CI config and first Behat test

Author: gregumo

.gitignore

@@ -0,0 +1 @@
+/vendor/*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "victoire-test-suite"]
+	path = victoire-test-suite
+	url = git@github.com:Victoire/test-suite.git

Tests/Features/create.feature

@@ -0,0 +1,12 @@
+@mink:selenium2 @alice(Page)  @reset-schema
+Feature: Create a Button widget
+
+    Background:
+        Given I maximize the window
+        And I am on homepage
+
+    Scenario: I create a new Button widget
+        When I switch to "layout" mode
+        Then I should see "New content"
+        When I select "Button" from the "1" select of "main_content" slot
+        Then I should see "Widget  (Button)"

circle.yml

@@ -0,0 +1,28 @@
+machine:
+  timezone:
+    Europe/Paris
+  services:
+    - redis
+  php:
+    version: 7.1.0
+
+checkout:
+  post:
+    - git submodule sync
+    - git submodule update --init
+
+dependencies:
+  override:
+    - bash victoire-test-suite/dependencies.sh victoire/button-widget
+  cache_directories:
+    - ~/.composer/cache
+
+test:
+  override:
+    - bash victoire-test-suite/circle.sh victoire/button-widget:
+        parallel: true
+    - bash victoire-test-suite/test.sh victoire/button-widget
+
+general:
+  artifacts:
+    - "fails"