Some grammar/spelling/etc. fixes for the README.

Author: shlomif

euler/README

@@ -4,6 +4,6 @@ http://projecteuler.net/
 
 This is a directory to post answers to project euler questions.
 
-Use the file format prob000-author.pl replaceing 000 with the problem number and author with your name.  For example if I am eric256 and I answer problem one I will save it as prob001-eric256.pl
+Use the file format prob000-author.pl, while replacing "000" with the problem number and "author" with your name.  For example if I am eric256 and I answer problem No. 1, I will save it as prob001-eric256.pl
 
 Thanks for playing!