update RSVP dep
Remove export function from Brocfile reference.

Also, added a slightly more involved sample (but still very simple) that
illustrates using a string or one of the plugins.
Show file with build errors.

Adds filename to output from both `broccoli serve` and `broccoli build dist`.
Bring back simple build/rebuild timer.

Does not offer nearly the same ability that was removed in
https://github.com/joliss/broccoli/commit/0fcb34b2ec0a8fe22720bb597796ba5e0d705757,
but it is useful to generally know if your build time is over/under some
reasonable number.
Add broccoli-file-mover and broccoli-file-remover to plugin list.

ZOMG, tested plugins?!?!?!? :D
Merge pull request #111 from rjackson/bring-back-crude-timer

Bring back simple build/rebuild timer.
Merge pull request #102 from rjackson/show-file-on-serve-errors

Show file with build errors.
Merge pull request #109 from rjackson/remove-old-reference-from-readme

Remove export function from Brocfile reference.
Merge pull request #108 from stefanpenner/patch-1

update RSVP dep
Merge pull request #110 from rjackson/add-broccoli-file-mover

Add broccoli-file-mover and broccoli-file-remover to plugin list.
Add broccoli-file-creator and broccoli-fixturify to README.
Merge pull request #113 from rjackson/moar-plugins

Add broccoli-file-creator and broccoli-fixturify to README.