Routing example added
Merge pull request #1 from matsko/master

Merged. Thanks!
Merge remote-tracking branch 'upstream/master'

Upstream merge to sync latest changes.
Merge remote-tracking branch 'upstream/master'

Merge upstream changes.
Merge remote-tracking branch 'upstream/master'

Merge upstream changes.
Add warning message to chapter 7 tutorial.
Several changes to pagination. Half of the tutorial is now covered.
Clean-up yaml and main.dart <pre>

Clean-up in yaml and dart excerpts
- Removing “yaml” from yaml sample (probably a copy-paste error).
- Removing trailing blank line from main.dart <pre>
Pagination complete.
[tutorial] removing blank lines and leading whitespace in code excerpts

In Chapters 2 to 4:
 - Removing unnecessary blank lines at the end of some code excerpts.
 - Removing leading whitespace so that all code samples are consistent
with Chapter (which has no leading space for, e.g., HTML excerpts).
 - Other minor code excerpt cleanup.
Merge pull request #7 from chalin/patch-9-chap-02-code-excerpt-cleanup

[tutorial] removing blank lines and leading whitespace in code excerpts (Chap. 2 to 4)
Merge remote-tracking branch 'upstream/master'

Merge upstream/master.
Merge pull request #5 from chalin/patch-8-chap-03-tweaks

Clean-up yaml and main.dart <pre>
Merge pull request #8 from brianhall/master

Merging upstream