fixes typos on readme.

[common-nighthawk]

removes erroneous comma after last key/value pair in ruby hash.

[awood45]

I wouldn't call this erroneous, in the sense that the code works just fine (it would be invalid JSON, but not invalid Ruby). Stylistically though this is a cleaner look.

[awood45]

I'll go with the best practice on this one. Thanks!

[common-nighthawk]

Thanks for the merge, Alex.

I'm embarrassed to say that I thought { 'hello' => 'world', 'foo' => 'bar', } was invalid Ruby code. I should have run it in IRB first.

However, I did confirm that this syntax is consistent with accepted best practices--
https://github.com/bbatsov/ruby-style-guide#no-trailing-array-commas

Which is all to say... sorry for using 'erroneous' 😉

(I recently watched your talk from RailsConf15. Thanks for everything re: AWS + rb.)

[awood45]

Correct. It's a common misconception due to the fact that JSON will break, but it's a best practice to exclude the comma.

Also, I appreciate the thanks, hope the workshop was useful!