Add UTF-8 check test

Rakefile

@@ -1,5 +1,7 @@
 task default: %w[test]
 
 task :test do
-	  ruby "tests/yaml.rb"
+  Dir["./tests/*.rb"].each do |test_file|
+    ruby test_file
+  end
 end

tests/encoding.rb

@@ -0,0 +1,25 @@
+#!/usr/bin/env ruby
+$file_count = 0;
+markdown_files = Dir["./**/*.html.markdown"]
+markdown_files.each do |file|
+  begin
+    file_bin = File.open(file, "rb")
+    contents = file_bin.read
+    if ! contents.valid_encoding?
+      puts "#{file} has an invalid encoding! Please save the file in UTF-8!"
+    else
+      $file_count = $file_count + 1
+    end
+  rescue Exception => msg
+    puts msg
+  end
+end
+files_failed = markdown_files.length - $file_count
+if files_failed != 0
+  puts "FAILURE!!! #{files_failed} files were unable to be validated as UTF-8!"
+  puts "Please resave the file as UTF-8."
+  exit 1
+else
+  puts "Success. All #{$file_count} files passed UTF-8 validity checks"
+  exit 0
+end

tests/yaml.rb

@@ -16,6 +16,6 @@ if files_failed != 0
   puts "Please check the YAML headers for the documents that failed!"
   exit 1
 else
-	puts "Success. All #{$file_count} were checked"
+  puts "Success. All #{$file_count} files were verified valid YAML"
   exit 0
 end