Merge pull request #110 from noahlz/master

Minor fixes to ruby.html

ruby.html.markdown

@@ -216,7 +216,9 @@ when 'D'
   puts "Scraping through"
 when 'F'
   puts "You failed!"
-
+else 
+  puts "Alternative grading system, eh?"
+end
 
 # Functions
 
@@ -283,7 +285,7 @@ class Human
     end
 
     # A class method uses self to distinguish from instance methods.
-    $ It can only be called on the class, not an instance.
+    # It can only be called on the class, not an instance.
     def self.say(msg)
        puts "#{msg}"
     end