add step to encode message

- generate a key with "salt" and "passPhrase" attribute
- add "iv" attribute on encrypt function call
- encode result to B64
- add 2 global parameters for salting process :
	+ keySize
	+ iterationCount
change
change .gitignore
change gitignore
remove .idea
update test according to new crypto-service with salt and iv
Merge pull request #1 from jetien/master

new crypto-service version to interoperable AES encryption with Java and JavaScript