Add coveralls, drop travis test for 1.8.7

.travis.yml

@@ -3,9 +3,7 @@ before_install:
  - sudo apt-get install -qq libfftw3-dev
 language: ruby
 rvm:
-  - "1.8.7"
   - "1.9.3"
   - "2.0.0"
   - "2.1.0"
   - "2.1.1"
-  - ree

README.md

@@ -2,7 +2,9 @@
 
 [![Gem Version](https://badge.fury.io/rb/convolver.png)](http://badge.fury.io/rb/convolver)
 [![Build Status](https://travis-ci.org/neilslater/convolver.png?branch=master)](http://travis-ci.org/neilslater/convolver)
+[![Coverage Status](https://coveralls.io/repos/neilslater/convolver/badge.png?branch=master)](https://coveralls.io/r/neilslater/convolver?branch=master)
 [![Inline docs](http://inch-ci.org/github/neilslater/convolver.png?branch=master)](http://inch-ci.org/github/neilslater/convolver)
+[![Code Climate](https://codeclimate.com/github/neilslater/convolver.png)](https://codeclimate.com/github/neilslater/convolver)
 [![Dependency Status](https://gemnasium.com/neilslater/convolver.png)](https://gemnasium.com/neilslater/convolver)
 
 Calculates discrete convolution between two multi-dimensional arrays of floats.

convolver.gemspec

@@ -22,6 +22,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "mocha", ">= 0.14.0"
   spec.add_development_dependency "rake", ">= 1.9.1"
   spec.add_development_dependency "rake-compiler", ">= 0.8.3"
+  spec.add_development_dependency "coveralls", ">= 0.6.7"
 
   spec.files         = `git ls-files`.split($/)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }

spec/helpers.rb

@@ -1,7 +1,11 @@
 # convolver/spec/helpers.rb
-require 'convolver'
+require 'coveralls'
 require 'mocha/api'
 
+Coveralls.wear!
+
+require 'convolver'
+
 # Matcher compares NArrays numerically
 RSpec::Matchers.define :be_narray_like do |expected_narray|
   match do |given|