Expose the pronunciation from the response

[astromme]

The server response includes pronunciation (e.g. pinyin for chinese) which should be exposed in the library's response.

[coveralls]

Coverage increased (+1.7%) to 92.647% when pulling fc2ace1 on astromme:master into 777d7db on matheuss:master.

[codecov-io]

Codecov Report

Merging #61 into master will increase coverage by 0.22%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #61      +/-   ##
==========================================
+ Coverage   92.42%   92.64%   +0.22%     
==========================================
  Files           2        2              
  Lines          66       68       +2     
==========================================
+ Hits           61       63       +2     
  Misses          5        5

Impacted Files	Coverage Δ
index.js	90.56% <100%> (+0.36%)	⬆️

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[jacksteamdev]

Looks good! Props for adding a test.