Feature (Unit Tests)  : jasmine unit tests for repository.js

Feature (Unit Tests)  : jasmine unit tests for repository.js

```grunt test``` will run a pass of all jasmine tests
```grunt dev``` will run in dev mode keeping watch on and running tests with every change

I used ```npm init``` to add required packages to the ```package.json```, let me know if that looks right. 
```angular-mocks.js v1.2.3``` added 
```/tests/jasmine``` dir added for all jasmine tests

[As discussed Issues #69](https://github.com/lmenezes/elasticsearch-kopf/issues/69)