Fixed coverage setup: fix path, filter tests.

.gitignore

@@ -13,6 +13,7 @@ config.sub
 configure
 configure.ac
 configure.in
+/coverage/
 depcomp
 install-sh
 libtool

test/test_helper.rb

@@ -7,9 +7,12 @@
 
 if ENV["COVERAGE"]
   require "simplecov"
-  SimpleCov.start
+  SimpleCov.start do
+    add_filter "/test/"
+  end
   # for coverage we need to load all ruby files
-  Dir["#{root_location}/library/*/src/{module,lib}/**/*.rb"].each { |f| require_relative f }
+  Dir["#{root_location}/src/{include,lib,modules}/**/*.rb"]
+    .each { |f| require_relative f }
   # use coveralls for on-line code coverage reporting at Travis CI
   if ENV["TRAVIS"]
     require "coveralls"