PHPLIB-56: Travis CI configuration

Author: jmikola

.gitignore

@@ -1,5 +1,4 @@
 *.swp
-.*
 !.gitignore
 composer.phar
 composer.lock

.travis.yml

@@ -0,0 +1,17 @@
+language: php
+
+php:
+  - 5.3
+  - 5.4
+  - 5.5
+  - 5.6
+
+env:
+  - MONGODB_VERSION=0.2.0
+
+services: mongodb
+
+before_script:
+  - pecl -q install -f mongodb-${MONGODB_VERSION}
+  - php --ri mongodb
+  - composer install --dev --no-interaction --prefer-source