Improve travi.yml's readability.

.travis.yml

@@ -48,17 +48,18 @@ matrix:
     - php: hhvm
 
 before_install:
-  - sh -c "if [ '$HHVM' != '1' ]; then phpenv config-rm xdebug.ini; fi"
+  - if [ $HHVM != 1 ]; then phpenv config-rm xdebug.ini; fi
+
   - composer self-update
   - if [ -n "$GH_TOKEN" ]; then composer config github-oauth.github.com ${GH_TOKEN}; fi;
 
-  - sh -c "if [ '$DB' = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test;'; fi"
-  - sh -c "if [ '$DB' = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test2;'; fi"
-  - sh -c "if [ '$DB' = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test3;'; fi"
+  - if [ $DB = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test;'; fi
+  - if [ $DB = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test2;'; fi
+  - if [ $DB = 'mysql' ]; then mysql -u root -e 'CREATE DATABASE cakephp_test3;'; fi
 
-  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'CREATE DATABASE cakephp_test;' -U postgres; fi"
-  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'CREATE SCHEMA test2;' -U postgres -d cakephp_test; fi"
-  - sh -c "if [ '$DB' = 'pgsql' ]; then psql -c 'CREATE SCHEMA test3;' -U postgres -d cakephp_test; fi"
+  - if [ $DB = 'pgsql' ]; then psql -c 'CREATE DATABASE cakephp_test;' -U postgres; fi
+  - if [ $DB = 'pgsql' ]; then psql -c 'CREATE SCHEMA test2;' -U postgres -d cakephp_test; fi
+  - if [ $DB = 'pgsql' ]; then psql -c 'CREATE SCHEMA test3;' -U postgres -d cakephp_test; fi
 
   - if [[ $TRAVIS_PHP_VERSION != 'hhvm' ]] ; then pecl channel-update pecl.php.net; fi;
 
@@ -80,7 +81,7 @@ script:
   - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION = 7.* ]]; then export CODECOVERAGE=1 ; phpdbg -qrr vendor/bin/phpunit --coverage-clover=clover.xml; fi
   - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION != 7.* ]]; then vendor/bin/phpunit; fi
 
-  - sh -c "if [ '$PHPCS' = '1' ]; then vendor/bin/phpcs -p --extensions=php --standard=vendor/cakephp/cakephp-codesniffer/CakePHP ./src ./tests; fi"
+  - if [ $PHPCS = 1 ]; then vendor/bin/phpcs -p --extensions=php --standard=vendor/cakephp/cakephp-codesniffer/CakePHP ./src ./tests; fi
 
 after_success:
   - if [[ $DEFAULT = 1 && $TRAVIS_PHP_VERSION = 7.* ]]; then bash <(curl -s https://codecov.io/bash); fi