Merge pull request #281 from petergoldstein/feature/travis_ci

Travis CI integration

.travis.yml

+rvm:
+  - 1.8.7
+  - 1.9.2
+  - 1.9.3
+gemfile:
+  - Gemfile
+  - gemfiles/Gemfile.mongoid-2.4.x
+env: SSL_CERT_DIR=/etc/ssl/certs
+matrix:
+  exclude:
+    - rvm: 1.8.7
+      gemfile: Gemfile
+      env: SSL_CERT_DIR=/etc/ssl/certs
+    - rvm: 1.9.2
+      gemfile: Gemfile
+      env: SSL_CERT_DIR=/etc/ssl/certs
+    - rvm: 1.9.3
+      gemfile: gemfiles/Gemfile.mongoid-2.4.x
+      env: SSL_CERT_DIR=/etc/ssl/certs

gemfiles/Gemfile.mongoid-2.4.x

+source "http://rubygems.org"
+
+gemspec :path => '..'
+
+group :development, :test do
+  gem 'rake'
+  gem 'mongoid', '2.4.11'
+  gem 'bson_ext', :platforms => :ruby
+
+  gem 'rails'
+
+  platforms :jruby do
+    gem 'jruby-openssl'
+  end
+end