cmd-shim@2.1.0

- [`9c93ac3`](npm/cmd-shim@9c93ac3)
  [#2](npm/cmd-shim#2)
  [#3380](npm/npm#3380)
  Handle environment variables properly
  ([@basbossink](https://github.com/basbossink))

- [`2d277f8`](npm/cmd-shim@2d277f8)
  [#25](npm/cmd-shim#25)
  [#36](npm/cmd-shim#36)
  [#35](npm/cmd-shim#35) Fix 'no shebang' case
  by always providing `$basedir` in shell script
  ([@igorklopov](https://github.com/igorklopov))

- [`adaf20b`](npm/cmd-shim@adaf20b)
  [#26](npm/cmd-shim#26) Fix `$*` causing an
  error when arguments contain parentheses
  ([@satazor](https://github.com/satazor))

- [`49f0c13`](npm/cmd-shim@49f0c13)
  [#30](npm/cmd-shim#30) Fix paths for
  MSYS/MINGW bash ([@dscho](https://github.com/dscho))

- [`51a8af3`](npm/cmd-shim@51a8af3)
  [#34](npm/cmd-shim#34) Add proper support for
  PowerShell ([@ExE-Boss](https://github.com/ExE-Boss))