Added helpers to make adding elements to TJsonVal array easier.
Added tokenizer wrapper to JavaScript. Text feature extractor can work on already tokenized texts (string vector of tokens).
Merge branch 'master' of github.com:qminer/qminer

Conflicts:
	src/qminer/qminer_js.cpp
Added returnCode property to process object in JavaScript. Assert fails in JavaScript return result in non-zero return code. Updated test scripts accordingly.
Merge pull request #17 from blazf/master

Tokenizer in JavaScript, new test scripts