#450 - allow configuration of manifest dir
Return targetPath
Update docs
packer/rpc: auto-incrementable ID for endpoints
packer/rpc: a muxconn...
packer/rpc: close the streams when the underlying rwc closes
packer/rpc: more fine grained lock access on MuxConn
packer/rpc: muxconn is a lot more sane, acts like bsd socket
packer/rpc: update docs
packer/rpc: tests passing
packer/rpc: use packer.MockArtifact
packer/rpc: Cache
packer/rpc: PostProcessor
packer/rpc: post-processors work on a single connection
packer/rpc: work-in-progress commit
packer/rpc: MuxConn can return next available stream ID
packer/rpc: get PostProcessor working
Merge branch 'master' into configure-manifest-dir
packer/rpc: MuxConn.NextId properly increments
packer/rpc: MuxConn writes don't block the whole loop