New device with single routing engine example

This example implements the single routing engine scenario from the
'Adding a new routing device to your network' example document.
Merge pull request #5 from mpfefferle/new_device

New device with single routing engine example
Merge pull request #6 from dfex/master

Adding a new network device NCE Template
generated skeleton
Merge pull request #7 from mpfefferle/accounting-statistics

Logging Network Statistics Using Accounting Profiles
initial config
Sample output

I validated this with a commit check and it seemed ok.
Merge pull request #8 from mpfefferle/accounting-statistics

Logging Network Statistics Using Accounting Profiles
Merge pull request #1 from jeremyschulman/master

Synchronising master with my branch