update travis.yml to test on php 5.5

.travis.yml

@@ -4,6 +4,7 @@ php:
   - 5.2
   - 5.3
   - 5.4
+  - 5.5
 
 env:
   - DB=mysql
@@ -25,8 +26,8 @@ before_script:
   - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'CREATE SCHEMA test3;' -U postgres -d cakephp_test; fi"
   - chmod -R 777 ./app/tmp
   - sudo apt-get install lighttpd
-  - pear channel-discover pear.cakephp.org
-  - pear install --alldeps cakephp/CakePHP_CodeSniffer
+  - sh -c "if [ '$PHPCS' = '1' ]; then pear channel-discover pear.cakephp.org; fi"
+  - sh -c "if [ '$PHPCS' = '1' ]; then pear install --alldeps cakephp/CakePHP_CodeSniffer; fi"
   - phpenv rehash
   - set +H
   - echo "<?php
@@ -113,4 +114,4 @@ script:
   - sh -c "if [ '$PHPCS' != '1' ]; then ./lib/Cake/Console/cake test core AllTests --stderr; else phpcs -p --extensions=php --standard=CakePHP ./lib/Cake; fi"
 
 notifications:
-  email: false
+  email: false