Update install-release.sh

[netcookies]

1. add proxy support for downloading release ( for client under GFW )
2. stop v2ray daemon before update release
3. start v2ray daemon when finished

[codecov-io]

Current coverage is 88.91%

Merging #82 into master will not affect coverage as of 8d3b9c6

@@            master     #82   diff @@
======================================
  Files          114     114       
  Stmts        11116   11116       
  Branches       365     366     +1
  Methods          0       0       
======================================
  Hit           9884    9884       
  Partial        258     258       
  Missed         974     974       

Review entire Coverage Diff as of 8d3b9c6

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[v2ray]

thx

[wswaw]

"inboundDetour":[{...},{...}]
另外请尽快将配置文件更新至新标准。