First commit!

* Add instructions
Step 1: Normalize method
Step two: Add method for array of unique words
Step 3: Count words (total) and words (unique)

* Also fixed a problem within step 1 with the gsub!s
Step 4: Create method to count how many times each word appears. Returns a hash!
Step 5

* Get a hash of all the words longer than some value (default 3)
* find the highest value in the new hash
* Return a hash of all the words with a value of this highest value
Refactor step 1 -- remove loop
Extra challenge!

* Find out the length of the longest word
* Select all the words with a length equal to the longest length
Remove loop from step 4

* Instead, use inline if statements
Minor refactoring in step 5