Update .travis.yml

1.```[0K$ [ $RAILS_VERSION == "4.2.0" -o $RAILS_VERSION == "5.0.0" ] && travis_retry gem install sqlite3 --version "~> 1.4.0" || true
/home/travis/.travis/functions: line 104: [:``` ***too many arguments***
2. nokogiri's older version also added for 2.1.10 and 2..110

Author: JuPlutonic

.travis.yml

@@ -43,6 +43,8 @@ before_install:
 before_script:
   - "[ $TRAVIS_RUBY_VERSION = \"1.9.3\" ] && travis_retry gem install mime-types --version \"~> 2\" || true"
   - "[ $TRAVIS_RUBY_VERSION = \"1.9.3\" -o $TRAVIS_RUBY_VERSION = \"2.0.0\" ] && travis_retry gem install nokogiri --version \"~> 1.6.8\" || true"
+  - "[ $TRAVIS_RUBY_VERSION = \"2.1.10\" -o $TRAVIS_RUBY_VERSION = "\2.2.10\" ] && travis_retry_gem install nokogiri --version \"~> 1.6.8\" || true
   - "[ $TRAVIS_RUBY_VERSION = \"2.1.10\" -o $TRAVIS_RUBY_VERSION = \"2.2.10\" ] && travis_retry gem install i18n --version \"= 1.5.1\" || true"
-  - "[ $RAILS_VERSION == \"4.2.0\" -o $RAILS_VERSION == \"5.0.0\" ] && travis_retry gem install sqlite3 --version \"~> 1.4.0\" || true"
+  - "[ $RAILS_VERSION == \"4.2.0\" ] && travis_retry gem install sqlite3 --version \"~> 1.4.0\" || true"
+  - "[ $RAILS_VERSION == \"5.0.0\" ] && travis_retry gem install sqlite3 --version \"~> 1.4.0\" || true"
   - travis_retry gem install rails --version "$RAILS_VERSION"