title: Permission denied for Git Clone when I do npm install
body: <p>I have git dependencies in my package.json file. 
  When I do <strong>sudo npm install</strong> in my react app folder, I get this error</p>
  
  <pre><code>    npm ERR! code 1
      npm ERR! Command failed: /usr/bin/git clone --depth=1 -q -b master 
      https://github.com/lrojas94/react-file-base64.git /home/admin1/.npm/_cacache/tmp/git-clone-462782fb
      npm ERR! /home/admin1/.npm/_cacache/tmp/git-clone-462782fb/.git: Permission denied
      npm ERR! 
  
      npm ERR! A complete log of this run can be found in:
      npm ERR!     /home/admin1/.npm/_logs/2017-07-18T08_58_10_906Z-debug.log
      admin1@ubuntu:~/hys_pms/ui$ nohup: appending output to ‘nohup.out’
  </code></pre>
  
  <p>This is my package.json</p>
  
  <pre><code>    {
        "name": "react-hys-app",
        "version": "0.1.0",
        "private": true,
        "dependencies": {
          "annogenerate": "^0.8.1",
          "bootstrap": "^3.3.7",
          "cors-prefetch-middleware": "^1.0.0",
          "es6-promise": "^4.1.0",
          "express": "^4.15.3",
          "fixed-data-table": "^0.6.4",
          "flexbox-react": "^4.4.0",
          "font-awesome": "^4.7.0",
          "images-upload-middleware": "^1.1.1",
          "isomorphic-fetch": "^2.2.1",
          "jquery": "^3.2.1",
          "react": "^15.3.1",
          "react-autosuggest": "^9.0.1",
          "react-avatar-cropper": "^0.1.3",
          "react-bootstrap": "^0.30.8",
          "react-bootstrap-autosuggest": "^0.5.0",
          "react-bootstrap-date-picker": "^5.0.1",
          "react-bootstrap-table": "^3.3.1",
          "react-checkbox-list": "0.0.2",
          "react-datepicker": "^0.51.0",
          "react-datetime": "^2.8.10",
          "react-dom": "^15.4.0",
          "react-dual-listbox": "^1.1.0",
          "react-edit": "^6.3.0",
          "react-file-base64": "git+https://github.com/lrojas94/react-file-base64.git",
          "react-flexbox-grid": "^1.1.3",
          "react-grid-layout": "^0.14.6",
          "react-images-uploader": "^1.0.1",
          "react-pagify": "^2.2.0",
          "react-panelgroup": "^1.0.2",
          "react-radio-button-group": "^1.2.5",
          "react-redux": "^5.0.4",
          "react-router": "^2.7.0",
          "react-s-alert": "^1.3.0",
          "react-select": "^1.0.0-rc.5",
          "react-visibility-toggles": "^1.1.1",
          "reactabular-resizable": "^8.9.0",
          "reactabular-table": "^8.9.0",
          "recompose": "^0.23.5",
          "redux": "^3.6.0",
          "redux-devtools-extension": "^2.13.0",
          "redux-thunk": "^2.2.0",
          "redux-undo": "^1.0.0-beta9-9-1",
          "reflexbox": "^3.0.0-0",
          "schema2object": "^0.4.0",
          "searchtabular": "^1.5.0",
          "segmentize": "^0.4.1",
          "sortabular": "^1.4.0",
          "table-resolver": "^3.1.0"
        },
        "devDependencies": {
          "css-loader": "^0.28.4",
          "react-scripts": "0.9.5",
          "style-loader": "^0.18.2"
        },
        "scripts": {
          "start": "react-scripts start",
          "build": "react-scripts build",
          "test": "react-scripts test --env=jsdom",
          "eject": "react-scripts eject"
        }
      }
  </code></pre>
  
  <p>This line in package.json makes the issue. </p>
  
  <h3>"react-file-base64": "git+<a href="https://github.com/lrojas94/react-file-base64.git" rel="noreferrer">https://github.com/lrojas94/react-file-base64.git</a>"</h3>
  
  <p>I am struck with this issue. Kindly help.</p>