inject base64 in karma

base64

for test that has a dependency on base64

       Error: [$injector:unpr] Unknown provider: $base64Provider <- $base64 <- <- Xcomponent
       
to get rid of it,

1) include bower_components/angular-base64/angular-base64.js in karma.conf.js
2) in the test case, put this along with others

    
    beforeEach(function(){
        module('base64', /* other modules */);
    });