Coveralls handles multiple Travis builds.

There's no need to use the merged support from Coveralls since they
already handle receiving data from multiple Travis builds and
combining that.

Rakefile

@@ -5,15 +5,12 @@ Bundler::GemHelper.install_tasks
 
 require 'rspec/core'
 require 'rspec/core/rake_task'
-require 'coveralls/rake/task'
-
-Coveralls::RakeTask.new
 
 RSpec::Core::RakeTask.new(:spec) do |spec|
   spec.pattern = FileList['spec/**/*_spec.rb']
 end
 
-task :default => ["spec:all", "coveralls:push"]
+task :default => "spec:all"
 
 namespace :spec do
   %w(active_record_edge active_record_40 active_record_32 active_record_31 active_record_30 data_mapper_12 mongoid_31 mongoid_30 mongoid_24 mongo_mapper sinatra_13 sinatra_14).each do |gemfile|

spec/spec_helper.rb

@@ -1,3 +1,8 @@
+require 'coveralls'
+
+# Enable Coveralls
+Coveralls.wear!
+
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 
@@ -11,10 +16,6 @@ Bundler.require
 
 require 'capybara/rspec'
 require 'database_cleaner'
-require 'coveralls'
-
-# Enable Coveralls
-Coveralls.wear_merged!
 
 # Simulate a gem providing a subclass of ActiveRecord::Base before the Railtie is loaded.
 require 'fake_gem' if defined? ActiveRecord