Added docstrings, solves issue 1

caduceus/snake.py

@@ -1,5 +1,7 @@
 class Snake:
+
     def __init__(self, length, weight, common_name, sci_name):
+	'''intialize a  snake'''
         self.length = length
         self.weight = weight
         self.common_name = common_name

caduceus/sorter.py

@@ -1,10 +1,13 @@
 class SnakeSorter:
     def __init__(self, snakes):
+	'''dasdasdsa'''
         self.snakes = snakes
         self.sorted_snakes = []
 
     def sort_by_weight(self):
+	'''sdasdsadsadsadsa'''
         self.sorted_snakes = sorted(self.snakes, key=lambda snek: snek.weight)
 
     def sort_by_length(self):
+	'''asdsadsadsada'''
         self.sorted_snakes = sorted(self.snakes, key=lambda snek: snek.length)