Add note telling students to delete comments

Author: Jesse Farmer

README.md

@@ -15,3 +15,9 @@ To get started, you'll need to
 2. `sample_data` is a directory containing sample text files for our text analysis program to analyze
 3. `examples/args.rb` is a Ruby program demonstrating how command-line arguments work
 4. `examples/file_read.rb` is a Ruby program demonstrating how reading from a file in Ruby works
+
+## Note!
+
+The `textalyze.rb` file that comes with this repository is filled with comments
+designed to help you get started. You should feel free to delete them in order to
+make the program easier to read.

textalyze.rb

@@ -2,7 +2,8 @@
 # Visit https://github.com/codeunion/text-analysis/wiki to see what to do.
 #
 # Send an email to your cohort mailing list if you have any questions
-# or you're stuck!
+# or you're stuck! These comments are here to help you, but please delete them
+# as you go along. You wouldn't normally have such heavily-commented code.
 
 # Method name: item_counts
 # Input: An arbitrary array