Added travis build file

.travis.yml

@@ -0,0 +1,14 @@
+language: php
+
+php:
+  - 5.2
+  - 5.3
+  - 5.4
+
+env:
+  - TWIG_EXT=no
+  - TWIG_EXT=yes
+
+before_script:
+  - if [ "$TWIG_EXT" == "yes" ]; then sh -c "cd ext/twig && phpize && ./configure --enable-twig && make && sudo make install"; fi
+  - if [ "$TWIG_EXT" == "yes" ]; then echo "extension=twig.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`; fi