Add quotes.

git-svn-id: https://subversion.cs.illinois.edu/svn/cs225@8119 6fbd10e7-183d-0410-a318-cb416676e4f2

source/quotes.txt

@@ -83,3 +83,4 @@
 "Sometimes I just like to throw things." ~ Cinda Heeren
 "Be careful about using the following code -- I've only proven that it works, I haven't tested it." ~ Donald Knuth
 "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." ~ Douglas Adams
+"(reading a password) Uppercase 0... [...] Lowercase 0..." ~ Sean Massung