Provided a simple example in the documentation to orient new users.

[AidanDelaney]

@natefaubion provided me with a nice neat example of using codecs that made it easy for me to get my head around the module. I think the example might help to orient new users of the module so I've added it to the README.

[damncabbage]

This looks good; would it possible to get this change in? I too was confused when I first started looking at the Argonaut pieces (having never used the Scala original or Haskell port).

[thomashoneyman]

@AidanDelaney I'm sorry that this is the first time we're getting back to this -- contributors have been backlogged for quite some time, but I'm going through and taking care of older issues and PRs.

I think this is a valuable addition to the library. Quick note: the code snippet will need to be updated for 0.12, where StrMap has been deprecated in favor of a more accurate Foreign.Object type.

I'm going to leave this issue live for another week. If there hasn't been activity, then I'll merge and then perform the update to 0.12.

Thanks!

[thomashoneyman]

I've actually just gone ahead and updated this for 0.12 and fixed the conflicts. Thanks for adding this to the documentation!