added hidden files

.gitignore

@@ -0,0 +1,7 @@
+
+/vendor/
+.idea
+composer.lock
+/build/
+phpunit.xml
+lsp

.travis.yml

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+language: php
+
+php:
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+  - 7.3
+  - 7.4
+
+matrix:
+  fast_finish: true
+  include:
+    - php: 5.3
+      dist: precise
+    - php: 5.4
+      dist: precise
+    - php: 5.5
+      dist: trusty
+
+cache:
+  directories:
+    - $HOME/.composer
+
+before_install:
+  - composer self-update
+  - composer clear-cache
+
+install:
+  composer update --no-interaction --no-ansi --optimize-autoloader --prefer-dist
+
+script:
+  - php vendor/bin/phpunit
+
+# after_success:
+#   - travis_retry php vendor/bin/php-coveralls