map packages to julia modules, ref issue #28
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/gen.jl
some fixes for proto files that don't specify packages
remove deprecation warning
send module as generator output. fix deprecation
generate type names relative to imported modules
updated readme
defer type if any referenced type is deferred
generate sub-modules before including files that depend on them
Merge pull request #32 from tanmaykm/package

generate Julia modules corresponding to packages