Update README.md

On the first day of Christmas, 
my true love sent to me 
A partridge in a pear tree. 

On the second day of Christmas, 
my true love sent to me 
Two turtle doves, 
And a partridge in a pear tree. 

On the third day of Christmas, 
my true love sent to me 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the fourth day of Christmas, 
my true love sent to me 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the fifth day of Christmas, 
my true love sent to me 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the sixth day of Christmas, 
my true love sent to me 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the seventh day of Christmas, 
my true love sent to me 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the eighth day of Christmas, 
my true love sent to me 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the ninth day of Christmas, 
my true love sent to me 
Nine ladies dancing, 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the tenth day of Christmas, 
my true love sent to me 
Ten lords a-leaping, 
Nine ladies dancing, 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the eleventh day of Christmas, 
my true love sent to me 
Eleven pipers piping, 
Ten lords a-leaping, 
Nine ladies dancing, 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree. 

On the twelfth day of Christmas, 
my true love sent to me 
Twelve drummers drumming, 
Eleven pipers piping, 
Ten lords a-leaping, 
Nine ladies dancing, 
Eight maids a-milking, 
Seven swans a-swimming, 
Six geese a-laying, 
Five golden rings, 
Four calling birds, 
Three French hens, 
Two turtle doves, 
And a partridge in a pear tree!