Created a menu for startup

sentiment.py

@@ -5,6 +5,18 @@ import sys
 
 
 def main():
+    print ('Enter your choice: \n'
+                   '1: Get the score of a word\n'
+                   '2: Get the average score of words in a file (one word per line)\n'
+                   '3: Find the highest/lowest scoring words in a file\n'
+                   '4: Sort words from a file into positive.txt and negative.txt\n'
+                   '5: Exit the program\n')
+
+choice = raw_input('Enter a number 1-5: ')
+
+if choice == 5:
+    print('Goodbye!')
+
     ans = []
     sentiments = dict()
     total = 0