Bumped VERSION to 0.1.4

Updated CHANGELOG
* Added postgresql spec configuration
* Using database_cleaner gem from master branch

spec/support/postgresql.rb

@@ -0,0 +1,15 @@
+RSpec.configure do |config|
+
+  config.before(:suite) do
+    DatabaseCleaner.strategy = :transaction
+    DatabaseCleaner.clean_with(:truncation)
+  end
+
+  config.before(:each) do
+    DatabaseCleaner.start
+  end
+
+  config.after(:each) do
+    DatabaseCleaner.clean
+  end
+end