- added logic fo passing arguments of various types in call_ffi
	- added some tests to tests/ffi/ffi.js
	- added travis config file
	- update travis config
	- update travis config
	- Added notes to travis config
	- Added logic for handling stack arguments in call_ffi
	- Added notes to travis config
	- Added logic for stack arguments in call_ffi
Merge pull request #46 from teebrz/master

call_ffi, travis, etc