Your package name is not valid, because  name can no longer contain capital letters

```
npm ERR! 404 Registry returned 404 for GET on https://registry.npmjs.org/MockHttpRequest
npm ERR! 404
npm ERR! 404 'MockHttpRequest' is not in the npm registry.
npm ERR! 404 Your package name is not valid, because
npm ERR! 404
npm ERR! 404  1. name can no longer contain capital letters
```
