Adding Travis-CI syntax checking

Author: ronytomen

.travis.yml

@@ -0,0 +1,25 @@
+language: php
+
+php:
+- '5.4'
+- '5.5'
+- '5.6'
+- '7.0'
+
+matrix:
+  allow_failures:
+  - php: 7.0
+
+before_script:
+- if find . -name "*.php" -exec php -l {} 2>&1 \; | grep -iv "no syntax errors detected"; then exit 1; fi
+
+script: true
+
+install: true
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always
+    recipients:
+    - developers@cacti.net