Add angular tests to `npm test`

modified:   .gitignore
 - remove karma config file ignore

modified:   package.json
 - add karma module and add karma tests to the test script

modified:   spec/node/factory-spec.js
modified:   spec/node/fatsecret-spec.js
modified:   spec/node/mock/fatSecretResults.json
modified:   spec/node/mock/fatSecretServer.js
 - path changes after file move