[Pelias] Add missing files (#1036)

* Create .travis.yml

* Create .gitattributes

* Create .gitignore

Author: jbelien

src/Provider/Pelias/.gitattributes

@@ -0,0 +1,4 @@
+.gitattributes   export-ignore
+.travis.yml      export-ignore
+phpunit.xml.dist export-ignore
+Tests/           export-ignore

src/Provider/Pelias/.gitignore

@@ -0,0 +1,3 @@
+vendor/
+composer.lock
+phpunit.xml

src/Provider/Pelias/.travis.yml

@@ -0,0 +1,16 @@
+language: php
+sudo: false
+
+php: 7.2
+
+
+install:
+  - composer update --prefer-stable --prefer-dist
+
+script:
+    - composer test-ci
+
+after_success:
+    - wget https://scrutinizer-ci.com/ocular.phar
+    - php ocular.phar code-coverage:upload --format=php-clover build/coverage.xml
+