Adding Yosemite support for GM.

Many thanks to the folks who submitted PRs!

Merge pull request nompute#11 from ksoderstrom/master

Updated Info.plist to support Mail 7.3 1878.6 (OS X 10.9.4)

Updating Info.plist to support Mail 7.3/OS X 10.9.3.

Removing binary builds.

I'll be using Github releases for new versions.