Solo quiero saber cómo establecer valores de proxy (Url, usuario, contraseña) para Berkshelf3 en la plataforma de Windows cuando ejecuto el comando> berks intall?

Ya lo intento en el comando cmd:
http_proxy = 'http: //xx.xx.xx.xx'
http_proxy_user = USERNAME
http_proxy_pass = CONTRASEÑA

El problema pendiente:

C: \ chef-repo-distant \ cookbooks \ putty> berks install Resolviendo dependencias de libros de cocina ... Obteniendo 'masilla' de la fuente en. Obteniendo el índice del libro de cocina de ttps: //supermarket.getchef.com ... C: /opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb: 918: enconnect': SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certific ate verify failed (Faraday::SSLError) from C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:918:inblock in connect 'desde C: /opscode/chefdk/embedded/lib/ruby/2.0.0/timeout.rb: 66: entimeout' from C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:918:inconnect 'desde C: /opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb: 862: endo_start' from C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:851:ininicio 'desde C: /opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb: 1367: enrequest' from C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:1126:inget 'de C: /opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/adapter/net_http.rb: 78: enperform_request' from C:/opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/adapter/net_http.rb:39:inllamar 'desde C: /opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/request/retry.rb: 87: encall' from C:/opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/response.rb:8:inllamada 'desde C: /opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/response.rb: 8: encall' from C:/opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/rack_builder.rb:139:inbuild_response 'de C: /opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/connection.rb: 377: enrun_request' from C:/opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/connection.rb:140:inget 'de C: /opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/berkshelf-api-client-1.2.0/lib/berkshelf/api_client/connection.rb: 62: enuniverse' from c:/opscode/chefdk/embedded/apps/berkshelf/lib/berkshelf/source.rb:22:inbuild_universe 'de c: /opscode/chefdk/embedded/apps/berkshelf/lib/berkshelf/installer.rb: 21: en `bloque (2 niveles) en build_universe'

¡Gracias por el apoyo!

Intenta seguir todas las correcciones que puedo encontrar en la web pero no fue así :(

Uso "source 'ttp: //api.berkshelf.com" en mi Berksfile
Y ejecute el comando berks install en una ventana de PowerShell

SIN el conjunto de proxy, obtuve:

Error retrieving universe from source: ttp://api.berkshelf.com
  * [Berkshelf::APIClient::TimeoutError] Unable to connect to: ttp://api.berkshelf.com

CON el proxy establecido, obtuve:

Installing windows (1.34.2) from ttp://api.berkshelf.com ([opscode] ttp://supermarket.getchef.com/api/v1)
E, [2014-09-01T18:27:50.775682 #13104] ERROR -- : Actor crashed!
Faraday::SSLError: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:918:in `connect'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:918:in `block in connect'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/timeout.rb:52:in `timeout'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:918:in `connect'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:862:in `do_start'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:851:in `start'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:1367:in `request'
        C:/opscode/chefdk/embedded/lib/ruby/2.0.0/net/http.rb:1126:in `get'
        C:/opscode/chefdk/embedded/lib/ruby/gems/2.0.0/gems/faraday-0.9.0/lib/faraday/adapter/net_http.rb:78:in `perform
_request'

Estoy desesperado por resolver este problema :(

Sí, funciona. Tendré que agregar 3 certificados recuperados de IE alcacert.pem !!! Excelente ;)
Gracias Tensibai;)