support cpan in check_install

define check_installed_by_cpan
Usage: it { should be_installed.by('cpan') }
suport pear in check_installed

define check_installed_by_pear
Usage: it { should be_installed.by('pear') }
Merge pull request #260 from catatsuy/feature/cpan-support

support cpan in check_install
Add specs for installed by cpan
Revert "Add coveralls:push"

This reverts commit e0f6a23bfb405e55f8ba07a73c9b27548aa67a27.
Remove coveralls
Merge pull request #261 from catatsuy/feature/pear-support

suport pear in check_installed
Merge branch 'master' of github.com:serverspec/serverspec
Add specs for installed by pear
Bump up version
Make the exec backend return proper exitstatus.
Remove dependency of guard-rspec and growl

guard-rspec needs celluloids and it depends on Ruby 1.9 and later.
Merge pull request #262 from ryotarai/exec-backend-exitstatus

Make the exec backend return proper exitstatus.
Bump up version
Fix how to check service running

Fix for #264
Merge pull request #266 from serverspec/fix-check_running

Fix how to check service running
Bump up version
replace pkg_version with pkg_info
Add check_mode for FreeBSD
To be optional for \r (CR) because it may not be contained for the
output of `ip route` on CentOS6.4 at least