Bug fixes on release v0.2.1
Add debug info for setting stopword; Fix a bug setting stopword; Add english stopword test
Merge branch 'master' of github.com:dotSlashLu/nodescws into develop

Conflicts:
	libscws/scws.c
	nodescws.cc
applyStopword => applyStopWord
Better README
Bug fix for issue #5
Release v0.2.2; Close issue #5
Small bug fixes