Merge pull request #110 from shaunakpp/docs

Fixes a minor typo in the README.md

README.md

@@ -177,7 +177,7 @@ To add them, generate a migration such as:
 
 The `otp_secret_key` is not only required for users who use Google Authentictor,
 so unless it has been shared with the user it should be set to `nil`.  The
-following psudo-code is an example of how this might be done:
+following pseudo-code is an example of how this might be done:
 
 ```ruby
 User.find_each do |user| do