updated screenshot

BUG=

Review URL: https://chromiumcodereview.appspot.com//18544003
add the posters

BUG=

Review URL: https://chromiumcodereview.appspot.com//18559003
Update Unit Testing article with renamed useVMConfiguration() call

useVmConfiguration() doesn't work anymore:
https://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/pkg/unittest/lib/vm_config.dart?r=20462
Merge pull request #74 from lexun/master

Update Unit Testing article with renamed useVMConfiguration() call
bug fixes: 11711, 11695, 11271 (typos). Also added some info to README

BUG=
R=kathyw@google.com

Review URL: https://codereview.appspot.com/10739044
Add link from Futures article to Futures and Error Handling.

Review URL: https://chromiumcodereview.appspot.com/18936002
Merge pull request #73 from skabet/master

Rewrite IO article example to ensure path is in base dir.
Make the io article match the new io_http_server_file.dart code

Review URL: https://chromiumcodereview.appspot.com/18733005
Add emacs and more tools to /tools/; fix a typo

Staged at:

http://tools.dart-lang.appspot.com/tools/

I'm not thrilled with putting "More tools" under "Tips", but I think it'll do for now. In the future, we might want to remove the hero head, consider using tabs, and change the 2 download columns to be something else (such as official Darty goodness vs. other Darty goodness).

BUG=9942

Review URL: https://chromiumcodereview.appspot.com/18699005
Fix link

BUG=10555

Review URL: https://chromiumcodereview.appspot.com/19057004
adding note about new polymer packages and a link to converted examples

BUG=
R=kathyw@google.com

Review URL: https://codereview.appspot.com/11028044
basic code highlighting for our docs

wrap sections you want highlighted like this:

[[highlight]] xxxxx  [[/highlight]]

BUG=
R=kathyw@google.com

Review URL: https://chromiumcodereview.appspot.com//19291003
Update README.md
Update README.md
Update README.md
Update README.md
fix doc bugs #11270 and #11921

Review URL: https://chromiumcodereview.appspot.com/19786011
Minor typo closing "
Merge pull request #75 from financeCoding/fix-typo-native-extension-vm

Minor typo closing "
regenerate book

BUG=10271

Review URL: https://chromiumcodereview.appspot.com/20006002