Fix header generation
Previous commit incorrectly copied un-preprocessed headers. This fixes that and improves triggering the build phase to regenerate them.
Update project file for latest Xcode version
Prevent AppNap for the lifetime of a SyphonServer.

Closes issue #12
Check for OS support before disabling AppNap in SyphonServer
Merge pull request #1 from Syphon/master

Sync with the upstream.