correct index source in README

[steffkes]

all the other examples in the README are prefixed with MyApp. .. so in case something would be using them as starting point, it wouldn't work out of the box because the store wouldn't be able to load a few records as sample as it should be.

[coveralls]

Coverage increased (+0.5%) to 73.016% when pulling b0fbab6 on steffkes:steffkes-patch-1 into ce904e5 on infinitered:master.

[steffkes]

uhm, i'm pretty sure that these failure(s) were'nt triggered by my change on the README:

  3) test .run builds configured index (Mix.Tasks.Elasticsearch.BuildTest)
     test/mix/elasticsearch.build_test.exs:38
     ** (Mix.Error) Index posts could not be created.
     
         %HTTPoison.Error{id: nil, reason: :timeout}

any chance to rerun the build?

[danielberkompas]

Looks good, thanks! ⭐