Merge branch 'feature/gnvm-uninstall-support' into develop
Fixbug of https://trello.com/c/AASrWGTh/35-gnvm-gnvm-node-version
Fixbug of https://trello.com/c/RUO323Wa/33-gnvm-gnvm-xxx-yyyy by
ALL,include gnvm uninstall
Fixbug of https://trello.com/c/RUO323Wa/33-gnvm-gnvm-xxx-yyyy with DEFAULT
include gnvm config registry DEFAULT
1. optimize nodehandle.download()
   a) add return code
   b) when folder/node.exe is right, return 2
   c) when folder/node.exe error, remove folder and mkdir new folder
2. Fixbug of https://trello.com/c/KHTJgvww/36-gnvm-gnvm-update-error
modify gnvm update copywritting.
Fixbug of https://trello.com/c/RUO323Wa/33-gnvm-gnvm-xxx-yyyy
when gnvm uninstall only parameter and parameter isnt ALL bug
Fixbug of https://trello.com/c/RUO323Wa/33-gnvm-gnvm-xxx-yyyy
Fixbug of https://trello.com/c/txZhRmIH/30-gnvm-gnvm-use-x-xx-xx
modify copywritting.
Merge branch 'feature/optimize-same-logic' into develop
add util.GetNodeVersion and create .gnvmrc set globalversion
move nodehandle.getNodeVersion to util.GetNodeVersion
add gnvm config INIT logic
add util.GetLatestVersion()
move nodehandle.GetLatestVersion() to util.GetLatestVersion()
Fixbug of gnvm config INIT parameter logic
Fixbug of gnvm config INIT parameter logic
modify copywritting.
Merge branch 'feature/gnvm-config-support' into develop