Update API version for ItemLookup to 2013-08-01

[FdezRomero]

Changed API version from 2011-08-01 to 2013-08-01 when using the ItemLookup method as discussed in #26. All tests are passing OK.

You may want to update the dependencies (the badge is showing yellow at the moment) and bump the package version to NPM afterwards.

Thanks!

[t3chnoboy]

Great! Thanks @FdezRomero
I'll publish a new version.

[FdezRomero]

Awesome! Thanks @t3chnoboy

[t3chnoboy]

@masterT @JuanCrg90 Can you guys please publish a new version?
I got problems with my private npm server and npm registry configuration 😁

[masterT]

All right 🚢!

[masterT]

@t3chnoboy @FdezRomero Something is broken!

[masterT]

@t3chnoboy @FdezRomero First time the specs were run by Travis CI, some did not passed. Amazon returns an unexpected error because there were to much request sent in a too short time.

I will update the specs now so it won't happened again.

[masterT]

Here is the Amazon error:

$: { xmlns: 'http://ecs.amazonaws.com/doc/2013-08-01/' },
  Error: [
    {
      Code: [ 'RequestThrottled' ],
      Message: [
        'AWS Access Key ID: AKIAIXILNIR67IOXLNHA. You are submitting requests too quickly. Please retry your requests at a slower rate.'
      ]
    }
  ],
  RequestId: [ '6a410764-3977-4149-bdfd-383893c15992' ]
}

[arjunkori]

Same here,
I am getting the same error as @masterT mentioned above.

[masterT]

This is because you have a maximum rate of 1 request per seconde per IP address. You need to throttle your request. @arjunkori check the issue #37.