title: Not able to install @angular/cli using npm
body: <p>I am new to "@angular/cli", I have tried every thing but could not install.
  I am tired now please some one can help me to install angular 4 "@angular/cli" in my system.</p>
  
  <p>node and npm Version
  <a href="https://i.stack.imgur.com/XE4VY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/XE4VY.png" alt="enter image description here"></a>      </p>
  
  <p>and when I am installing "npm install -g @angular/cli" then getting 
  <a href="https://i.stack.imgur.com/jgG7m.png" rel="noreferrer"><img src="https://i.stack.imgur.com/jgG7m.png" alt="enter image description here"></a></p>
  
  <p>after installing node -v 6 I am getting below erorr
  <a href="https://i.stack.imgur.com/WE29s.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WE29s.png" alt="enter image description here"></a></p>
  
  <p>please suggest me where actually I am wrong. </p>