Merge pull request #23 from gordonwritescode/master

update add client key example, added cli
Merge pull request #24 from gordonwritescode/master

remove keyutils, replace with bitauth
Merge pull request #27 from gordonwritescode/master

fix login command to use proper bitauth method
Add error handling to examples

The BitPay client library errors are emitted as events back to the
caller. If the caller does not receives and acts on them, the outcome
is a very uninformative message like this:

    TypeError: Uncaught, unspecified "error" event

To prevent this, show the error message to the caller, and hopefully
encourage better practice, this patch adds a very simple error handling
code to the examples where it would matter.

Signed-off-by: Gergely Imreh <imrehg@gmail.com>
added help text and line returns
Merge pull request #32 from braydonf/feature/helptext

added help text and line returns
Merge pull request #31 from imrehg/errors

Add error handling to examples
create account application example
Merge pull request #35 from bitpay/feature/createAccountExample

create account application example