The get tokens function is used to return the raw string arguement to lower case and splits the string into a sorted string
based on the regular expression.  Most frequent word accepts one arguement, the body of text and passes it to the raw string
function and assigns it to the variable words.  The next line declares an empty object called word frequency.  The next line
is the beginning of a for loop that loops through the word variables contents, I believe that the contents are an array, my
thought now is that the raw string function actually returns an array that has been seperated into individual words by using
the regular expression.  The if statement within the for loop checks to see if the word exsists in the word frequency object,
if it does then it increments a word property to which represents how many times the word has occured.  The else statement
adds the word to the object and increments its value to one and only runs if the word does not exist.  The next line declares
a variable current max count and sets the variable to value of the key of the first key value.  The next line assigns
current max count to the value stored in word frequency at the key found in the previous line.  The final block of code is a
for loop that iterates over word frequency and compares to current max count.  If the current value of word frequency is
greater then current max count then assign that word to current max key and change the value of current max count to reflect
the change. The final line returns the value of current max key.