update package path of goji/param

goji/param is now refactored into a new package - https://github.com/goji/param per https://github.com/zenazn/goji/commit/1142ca60ec2658b7fa9c899f18add5b092a45fe2#diff-d41d8cd98f00b204e9800998ecf8427e
Merge pull request #2 from btbytes/patch-1

update package path of goji/param