Moved `jasmine` to `devDependencies`

As jasmine is only used for development and unit testing it has been moved to "devDependencies" which allows for ember-sockets to be installed without requiring jasmine by using the `--production` argument when running bower (i.e., `bower install ember-sockets --production`)
Merge pull request #21 from sarus/master

Moved `jasmine` to `devDependencies`