[Fixes #2557] nicer error message if someone creates server/index.js and it doesn’t export a function
Merge pull request #2558 from stefanpenner/better-error

[Fixes #2557] nicer error message if someone creates server/index.js and...
because
restart server and trigger LR on server file change
debounce server restart at 100ms when watching server files
use master of broccoli-sane-watcher to enable watchman support
force watchman on for now (until it is auto-detected by
broccoli-sane-watcher or sane)
allow GH deps
force watchman
auto-detection
Merge pull request #2265 from csantero/restart-server

Restart express server and trigger Livereload when a file under /server changes.
add additional case for users (like me) who have watchman installed
Merge branch 'master' of https://github.com/stefanpenner/ember-cli
Create junction when linking ember into addon

We can't rely on symlinkOrCopy fallback becasue copying a directory into into one if its own subdirectories is crazy
junction in all the slow tests

Also fix npm version to resolve installing bug on win
add EOL to restart tests