ignoring WebStorm project directory
fix: if CRC register shall be initialized to 0 explicitly, previous check always lead to false, hence defaulting to CRC implementations default initial value; therefore adding explicit check if previous===0 (not undefined!)
adding 'initial' parameter to test spec
split CRC16_CCITT test into two files: one with the default initial value, one with 0x0 as initial value
updating generated library files to version that support 0x0 as CRC initial value
3.1.0
Merge https://github.com/ssproessig/node-crc

Conflicts:
	test/crc16_ccitt.spec.coffee
	test/test_helpers.coffee
3.2.0
Merge branch 'master' of github.com:alexgorbatchev/node-crc