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.
Fixed bug with the Kalman Filter new function.
Merge https://github.com/qminer/qminer
Extended Kalman Filter implemented.
Extended Kalman filter (non-linear) implemented and tested.
Clarified extended Kalman filter example.
Further clarified extended Kalman filter example.
Added table of contents
Merge pull request #17 from blazf/master

Tokenizer in JavaScript, new test scripts
Added JavaScript library for mapping from JSON to XML and XML to JSON.
FOut.write and writeLine return FOut, so they can be chained.
readLine uses buffered version of read line from TSIn.
Merge pull request #18 from klemenkenda/master

Implementation of Extended Kalman Filter.
Merge branch 'master' of github.com:qminer/qminer
PJsonVal complains loudly if there is no UnicodeDef file present. Escaping in XML.js can be overwritten.
Merge pull request #19 from blazf/master

XML.js and Table of Contents for JavaScript API
Update README.md
Stopwords can now be added using a snowball format file in resources/stopwords directory.