makes the connection timeout to configurable.
adds DNS connection timeout description and fixes a missspelling.
DNS connect timeout should be just Connect timeout.
Merge pull request #7 from otahi/feature_timeout_configurable

Make the connection timeout to configurable
fixes rspec_dns_connection_timeout must be in have_dns.rb
adds spec and travis settings
Merge pull request #8 from otahi/feature_timeout_configurable

fixes rspec_dns_connection_timeout must be in have_dns.rb