Karma Tests run with --watch=true by default

[delasteve]

1. OSX El Capitan

angular-cli: 1.0.0-beta.5
node: 5.11.1
os: darwin x64

1. ng test
2. No failures
3. The README implies running ng test will only run the tests once and you need to use --watch to enable watch mode. Currently, this is not the case and you need to use --watch=false https://github.com/angular/angular-cli#running-unit-tests
   https://github.com/angular/angular-cli/blob/master/addon/ng2/commands/test.js#L14

What is the intended use? I will be glad to put a PR in for either updating the README.md or to update the ng test command.

[filipesilva]

The README is the one wrong, the behaviour changed some time ago. I'll put up a PR with updated info.

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