Merge pull request #6 from DrMarcII/master

Update to work with extension API changes coming in 1.1.
Migrate to Dart SDK 1.3.0
Update version to 0.0.8
Merge pull request #8 from cbracken/sdk-1_3_0

Migrate to Dart SDK 1.3.0
Merge branch 'master' of https://github.com/google/dart-sync-socket

Conflicts:
	lib/src/sync_socket_extension.cc
	pubspec.yaml