fix sqlite for jruby

.travis.yml

@@ -5,7 +5,7 @@ rvm:
   - 1.9.3
   - 2.1.0
   - rbx
-  - jruby-19mode
+  - jruby
 env:
   - RAILS=3.2.16
   - RAILS=4.0.2

Gemfile

@@ -1,5 +1,4 @@
 source 'https://rubygems.org'
-
 gemspec
 
 ACTIVE_ADMIN_PATH = File.dirname(__FILE__) unless defined?(ACTIVE_ADMIN_PATH)
@@ -14,6 +13,8 @@ gem 'arbre', github: 'gregbell/arbre' # until gregbell/arbre#16 makes it into an
 gem 'rake', require: false
 gem 'rails-i18n' # Provides default i18n for many languages
 
+gem RUBY_PLATFORM =~ /java/ ? 'jdbc-sqlite3' : 'sqlite3'
+
 group :development do
   # Debugging
   gem 'better_errors'      # Web UI to debug exceptions. Go to /__better_errors to access the latest one
@@ -44,5 +45,4 @@ group :test do
   gem 'parallel_tests'
   gem 'rspec-rails'
   gem 'shoulda-matchers'
-  gem 'sqlite3'
 end