- update to ngrams#2

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esalesky wants to merge 4 commits intomit-nlp:masterfrom

esalesky:master

Commits on Aug 7, 2015

- export BKG, ngrams to return all n-grams for all orders with truncated_start=false
esalesky
committed

Commits on Aug 11, 2015

- applied ngrams change to Strings, updated tests
esalesky
committed

Commits on Jan 8, 2016

- moving to v0.4 julia
esalesky
committed

Commits on Jun 16, 2016

- updating for ilr data (array{array}) (amended)
esalesky
committed