upgrade ez_setup.py
add min/max char count of tokens in simple_preprocess as parameters
Change total_words count from an iteration over all vocab items to a simple addition.  This speeds things up a lot when processing billions of total words.
Merge pull request #139 from holopoj/develop

word2vec: Change total_words count from a function to a count
update readme docs
Merge branch 'develop' of github.com:piskvorky/gensim into develop
Merge branch 'develop' into has_all_my_changes

Merging in upstream changes.

Conflicts:
	gensim/models/word2vec.py

The conflicts seemed to be automatically resolved by kdiff3 when I
started mergetool (I ran mergetool, it said kdiff3 was starting and
then it dumped me back at the prompt and all the files were listed as
resolved). All test cases passed.