Proofreading changes for Chapter 1.

[kbladow]

No description provided.

[alimi]

Hey @kbladow! Are you still interested in doing some copy editing on the tutorial? We're gearing up for the next workshop and we really appreciate your help.

I have one question about commas. Throughout the tutorial we've generally put commas between transition words. For example:

Now, open config/database.yml.

Then, run cd bookstore.

I like the commas because it helps pace the reader. What do you think?