Merge pull request #1 from cedias/ngrams

Ngrams
added other ways to make vectors
added freq
Merge pull request #2 from cedias/grouping

Grouping
added syntax + switch to inverse frequency
normalize freq
Merge pull request #3 from cedias/grouping

Grouping
[wip] double train on ngram and words
remove leftover sum...
Merge pull request #4 from cedias/doubletrain

Doubletrain
[wip] double learning, death by segfault
double training w/ default parameters
init + mean
Merge pull request #5 from cedias/doubletrain

Doubletrain
[wip] vocab.h, remake the vocabulary, act 1
got vocabulary out !
[wip] getting out thread - then get out merging tools - then make word2vec and word2gram - then chill
got threads out !
got merge stuff out !
word2gram/word2vec