docs(readme): update examples for 1.3+
docs(readme): update examples for 1.3+

Angular disabled the use of global controller constructors in 1.3+
https://github.com/angular/angular.js/blob/master/CHANGELOG.md#features-9
whitneyit/angular-jwt,doshprompt/angular-jwt,t301000/angular-jwt,Gillespie59/angular-jwt,auth0/angular-jwt,ackerdev/angular-jwt,dunglas/angular-jwt