Fixbug of delete currentversion from .gnvmrc
Fixbug of gnvm config copywritting.
Fixbug of gnvm config registry valid last char exist '/'.
Fixbug of gnvm config registry must be url
delete same comment
add util/util.go
add util/getGlobalNodePath method
use util.GlobalNodePath replace nodehandle.GetGlobalNodePath()
Fixbug of change nodehandle/getGlobalNodePath to util/getGlobalNodePath logic
delete nodehandle.SetRootPath()
optimize gnvm framwork
delete nodehandle.getCurrentPath()
add gnvm config resigtry DEFAULT
add gnvm config resigtry DEFAULT
modify gnvm config noderoot DEFAULT copywritting.
Merge branch 'feature/gnvm-config-support' into develop