I am running the command and getting the following error : 

    npm ERR! code ECONNRESET
    npm ERR! errno ECONNRESET
    npm ERR! network request to http://registry.npmjs.org/create-lwc-app failed, reason: Client network socket disconnected before secure TLS connection was established
    npm ERR! network This is a problem related to network connectivity.
    npm ERR! network In most cases you are behind a proxy or have bad network settings.
    npm ERR! network
    npm ERR! network If you are behind a proxy, please make sure that the
    npm ERR! network 'proxy' config is set properly.  See: 'npm help config'
    
    npm ERR! A complete log of this run can be found in:
    npm ERR!     C:\Users\itsme\AppData\Roaming\npm-cache\_logs\2019-11-07T05_41_06_502Z-debug.log
    Install for [ 'create-lwc-app@latest' ] failed with code 1