Update path to npm install

For some reason Github Flavored Markdown can't handle back slashes and angle brackets.

BAD: `Users\<user>\AppData` becomes `Users<user\AppData`
BAD: `Users\\<user>\AppData` becomes `Users\\AppData`
BAD: `Users\&lt;user&gt;\AppData` becomes `Users&lt;user>\AppData`
OK:   `Users\\&lt;user&gt;\AppData` becomes `Users\<user>\AppData`

README.md

@@ -45,7 +45,7 @@ Please note, you need to uninstall any existing versions of node.js before insta
 
 #### Uninstall existing npm
 
-You should also delete the existing npm install location (e.g. "C:\Users\<user>\AppData\Roaming\npm") so that the nvm install location will be correctly used instead. 
+You should also delete the existing npm install location (e.g. "C:\Users\&lt;user&gt;\AppData\Roaming\npm") so that the nvm install location will be correctly used instead. 
 
 #### Install nvm-windows