Change main field in package.json
Change main field in package.json

This allows loading the library with Browserify only by adding `require('webshim');`
cl4rke/webshim,cl4rke/webshim,aFarkas/webshim,fashionsun/webshim,fashionsun/webshim,aFarkas/webshim,cl4rke/webshim,aFarkas/webshim,fashionsun/webshim