Update rakefile so that it will return an exit code of 1 if there is a failure (Travis CI needs this). Make ISO-8859* encoding detections notices not failures

Rakefile

@@ -1,19 +1,23 @@
-task default: %w[test]
-
-task :test do
-  failed = false
-  Dir["./tests/*.rb"].each do |test_file|
+task default: %w[encoding yaml return_code]
+$failure = 0
+task :encoding do
   begin
-      ruby test_file
-      puts ""
-    rescue
-      puts "FAILED #{test_file}!"
-      puts ""
-      failed = true
+    ruby 'tests/encoding.rb'
+  rescue Exception => msg
+    puts msg
+    $failure += 1
   end
 end
-
-  if failed
-    exit 0
+task :yaml do
+  begin
+    ruby 'tests/yaml.rb'
+  rescue Exception => msg
+    puts msg
+    $failure += 1
+  end
+end
+task :return_code do
+  if $failure != 0
+    raise "Failed #{$failure} tests!!"
   end
 end

tests/encoding.rb

@@ -9,26 +9,24 @@ markdown_files.each do |file|
     case detection[:encoding]
     when 'UTF-8'
       $file_count = $file_count + 1
+    when 'ISO-8859-1'
+      $file_count = $file_count + 1
+    when /ISO-8859/
+      puts "Notice: #{file} was detected as #{detection[:encoding]} encoding. Everything is probably fine."
+      $file_count = $file_count + 1
     else
-      enc = detection[:encoding]
-      if not enc.start_with? 'ISO-8859-'
-        puts "#{file} was detected as #{detection[:encoding]} encoding! Please save the file in UTF-8!"
-      else
-        $file_count += 1
-      end
+      puts "WARNING #{file} was detected as #{detection[:encoding]} encoding. Please save the file in UTF-8!"
     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 Ruby's UTF-8 validity checks. This won't catch most problems."
+  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 #{$file_count} files were verified valid YAML"
+  puts "All #{$file_count} files were verified valid YAML"
   exit 0
 end