count html5validator errors

Author: php-coder

Dangerfile

@@ -291,6 +291,7 @@ unless File.file?(validator_output)
 else
 	errors_count = 0
 	File.readlines(validator_output).each do |line|
+		errors_count += 1
 		line.sub!(/^WARNING:html5validator.validator:/, '')
 
 		parsed = line.match(/^"file:(?<file>[^"]+)":(?<line>\d+)[^:]+: error: (?<msg>.+)/)