Update nokogiri to ~> 1.6.1
fix filename for spec c14n file
Merge pull request #22 from swiftype/fix_c14n_filename

fix filename for spec c14n file
Merge pull request #23 from swiftype/update_nokogiri

Update nokogiri to ~> 1.6.1
bump to 1.0.18
Update public_suffix to ~> 1.4.2
Merge pull request #25 from swiftype/update_public_suffix

Update public_suffix to ~> 1.4.2
set source encoding to utf-8 (1.9.3 compat), closes #26