Reuses same logic as the plugins for filtering points, should be only
a marginal performance decrease to check all the points before writing
to the output.
Added examples to the README as well (for generic pass/drop as well as
output pass/drop/tagpass/tagdrop).
X-Github-Closes #398closes#398closes#401
godep seems to have a problem when dependencies have `internal`
packages. So removing `godep go build` and `godep go test` from the
build process in favor of just checking out the correct revisions using
`godep restore` into the regular GOPATH.
This basically means that we are not actually using anything within the
Godeps directory except Godeps.json. I should probably make a separate
go dependency management system that does this.