Set version to 0.2.0b1 for release prep.
Merge branch 'master' into versions/0.2

Conflicts:
	cmd/hekad/main.go
Merge branch 'dev'
Merge branch 'master' into versions/0.2
Merge branch 'dev'
Merge branch 'master' into versions/0.2
Add readme header
Merge pull request #161 from dasmoose/master

Add readme header
Merge branch 'dev'
Merge branch 'master' into versions/0.2
Move StatPacket channel initialization into the StatsdInput's Init method to avoid a
race condition where another plugin's Run method tries to access the channel before
the StatsdInput's Run method has initialized it.
Merge pull request #168 from mozilla-services/features/packet-chan-init

Move StatPacket channel initialization into the StatsdInput's Init metho...
Add Windows build documentation

- fix SIGUSR1
- generate lua_sandbox.go with cmake
Cleanup the Mac build

- use strlen instead of strnlen
- extern the circular buffer constants in the header
Create a separate pool w/ a separate round-robin channel for each decoder type.
Each DecoderSet will grab one decoder of each type that is requested, caching that
decoder for subsequent requests.
Add report for decoder pool channels.
Perform actual message injection in a separate goroutine to free up the filter that's
doing the injection to continue processing incoming messages, prevents deadlock
conditions when the filter doing the injection is itself backing up the router.
Merge branch 'versions/0.2' of github.com:mozilla-services/heka into versions/0.2
Merge branch 'versions/0.2'
Merge branch 'master' into dev