Remove pathed service functionality

Removed the functionality in version 2 that allowed pathed services: SystemJS.import('some-service/file.js!sofe'). It wasn't widely used (if at all) and the functionality broke sofe for HTML5 push state routing apps. See #46

v2.1.4

Fixes

• Fixed bug where sofe inside of a webpack bundle would reference webpack System instead of SystemJS (c4e59ef)

v2.1.3

Bugfix for getServiceUrl to respect middleware

v2.0.0

Re-wrote sofe to work with SystemJS 0.20

v1.5.6

Improve the way we log overridden services: #41

Move to unpkg.com instead of npmcdn.com

#40

Bugfix

Fix regression bug with bundling eeea34f

v1.5.0

Features:

1. Add support for relative path resolution - #38

v1.4.1

Fixes:

1. Changing external getManifest to only return the exact manifest requested - #37

v1.4.0

1. Add getManifest(url): Promise and getServiceName(string|object): string APIs
2. Also fix applyMiddleware to properly chain middleware when called multiple times.