'bower' is not recognised as an internal or external command during npm install

[nathanosdev]

It only works if Bower is installed globally before the NPM install,
which is not ideal given that I'm installing through NPM instead of Bower.
The postinstall script should be able to use the locally installed version of Bower.
#71

[nathanosdev]

also Module not found: Error: Cannot resolve module 'ngCart' in.
This can be fixed by pushing the changes you made here: #73
to NPM.