Add travis configuration file

Author: max-m

.travis.yml

@@ -0,0 +1,20 @@
+language: php
+php:
+  - 5.5
+  - 5.4
+  - 5.3
+before_install:
+  - pear config-set auto_discover 1
+  - pear install pear/PHP_CodeSniffer
+  - pear install pear.phpunit.de/phpcpd
+  - phpenv rehash
+before_script:
+  - git clone --branch=master --depth=1 --quiet git://github.com/WoltLab/WCF.git WCF
+  - rm WCF/CodeSniff/WCF/Sniffs/Namespaces/ClassMustBeImportedSniff.php
+  - rm WCF/CodeSniff/WCF/Sniffs/Namespaces/UseDeclarationSniff.php
+  - sed -i 's/<rule ref="WCF.Namespaces.ClassMustBeImported" \/>//' WCF/CodeSniff/WCF/ruleset.xml
+  - sed -i 's/<rule ref="WCF.Namespaces.UseDeclaration" \/>//' WCF/CodeSniff/WCF/ruleset.xml
+script:
+  - find file -type f -name '*.php' |xargs -I file php -l file
+  - phpcs -p --extensions=php --standard="`pwd`/WCF/CodeSniff/WCF" file
+  - phpcpd --verbose --min-lines 10 file