added sale and purchase orders, added checks
Merge pull request #2 from rapdal/master

added sale and purchase orders, added checks

I am merging this but please add the missing files.
Removed some packages from the development.
Replaced Login/signup link with Meteor.account.ui loginButtons
Added some simple permissions. We can add anything here as we go on.
Added Meteor.publish
Remove client.js and added new directory "viewmodel"
Merge pull request #3 from skemb321/master

Added client/viewmodel directory and changed some files. see comment