Ruby on Rails: "no such file to load sqlite3" when preforming "rake db:create"

Symptom:

You were trying to run the Ruby tutorial and when you do

rake db:create

You get the following error:

rake db:create

(in /Users/StokeMaster/rails/myapp)

rake aborted!

no such file to load -- sqlite3

Fix:

Try this command

sudo gem install sqlite3-ruby