Issue with npm Install behind a corporate proxy

I am following the below steps:

Step1: I tried to clone the AngularJS Tutorial repository using the below command

git clone http://ift.tt/1b2LyO7

The repo got successfully clonned in my C:\Git

Since I am working behind a corporate proxy and I checked from various forums that i have to set the http_proxy and https_proxy, So i performed Step2.

Step2: Create Environment Variables http_proxy and https_proxy

http_proxy = http://userid:PASSWORD%24%25@domain:port 
https_proxy = https://userid:PASSWORD%24%25@domain:port 

Set npm config

npm config set proxy http://userid:PASSWORD%24%25@domain:port 
npm config set http_proxy http://userid:PASSWORD%24%25@domain:port 
npm config set https_proxy http://userid:PASSWORD%24%25@domain:port

(%24 for $ symbol and %25 for % symbol)

Step3: Now I opened node.js Command Prompt. and I changed the directroy to C:\Git\angular-phonecat and typed in the below command.

C:\Git\angular-phonecat>npm install
npm WARN optional dep failed, continuing fsevents@0.3.5
|


> ws@0.4.32 install C:\Git\angular-phonecat\node_modules\karma\node_modules\socket.io\node_modules\socket.io-client\node_modules\ws
> (node-gyp rebuild 2> builderror.log) || (exit 0)


C:\Git\angular-phonecat\node_modules\karma\node_modules\socket.io\node_modules\socket.io-client\node_modules\ws>node "C:\Program Files\nodejs\node_modules\
npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild
npm ERR! fetch failed http://ift.tt/1utTiPC
|
> angular-phonecat@0.0.0 postinstall C:\Git\angular-phonecat
> bower install

bower bootstrap#~3.1.1    ECONNREFUSED Request to http://ift.tt/1nHycNL failed: connect ECONNREFUSED

npm ERR! angular-phonecat@0.0.0 postinstall: `bower install`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular-phonecat@0.0.0 postinstall script.
npm ERR! This is most likely a problem with the angular-phonecat package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     bower install
npm ERR! You can get their info via:
npm ERR!     npm owner ls angular-phonecat
npm ERR! There is likely additional logging output above.
npm ERR! System Windows_NT 6.2.9200
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! cwd C:\Git\angular-phonecat
npm ERR! node -v v0.10.33
npm ERR! npm -v 1.4.28
npm ERR! code ELIFECYCLE
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     C:\Git\angular-phonecat\npm-debug.log
npm ERR! not ok code 0 

Any work around would be much appreciated.